Shop dirt motorcycle parts, spares and accessories for a wide range of motocross, enduro and off-road bikes at Radhouse. Explore engine components, brakes, chains and sprockets, suspension, replacement plastics, controls and essential maintenance parts, with UK delivery.
Dirt motorcycles are built for demanding conditions, from motocross tracks and enduro trails to recreational off-road riding. Keeping your bike in good condition means having access to reliable replacement parts, regular maintenance essentials and components suited to your specific make and model.
At Radhouse, we offer a wide selection of dirt motorcycle parts, spares and accessories for popular motocross and enduro bikes, including Yamaha, Honda, KTM, Kawasaki and Suzuki models.
Our catalogue covers everything from engine parts, pistons and gaskets to braking components, chains and drivetrain parts, suspension components, replacement bodywork and plastics and fuel, air and cooling system parts.
Whether you're carrying out routine servicing, rebuilding an engine, replacing damaged components after a ride or preparing your motorcycle for the next event, you can explore our range by parts category, manufacturer or motorcycle model.
Our Shop By Model finder uses make, model and year information where available to help you narrow down compatible products. This is especially useful for dirt bikes, where components can vary between different generations, engine sizes and motocross or enduro variants.
From everyday maintenance to more involved repairs, Radhouse makes it easier to find the parts you need to keep your dirt motorcycle ready for the next ride.
Always check the individual product specifications and compatibility information before ordering. If you're unsure which component is right for your bike, contact us and we'll be happy to help.
Use the Radhouse Bike finder to select your motorcycle's manufacturer, model and year. You can also browse our dirt motorcycle categories for engine parts, brakes, suspension, drivetrain components and replacement plastics. Always check the product compatibility details before ordering, as parts can differ between model years and engine variants.
Motocross bikes are generally designed for closed-course racing, while enduro motorcycles are built for longer rides across varied terrain. Although some components may be shared, differences can include suspension settings, gearing, electrical equipment, fuel systems and bodywork. Parts aren't always interchangeable, even between bikes from the same manufacturer.
Replacement intervals depend on riding conditions, maintenance and wear. Mud, sand and frequent off-road riding can accelerate drivetrain wear. Regularly inspect your chain for stretching, tight spots and damaged links, and check sprocket teeth for excessive wear. Chains and sprockets are often best replaced together when worn to avoid premature deterioration of new components.
Not necessarily. Dirt motorcycle plastics can vary significantly between model years, even when the manufacturer and model name remain unchanged. Radiator shrouds, mudguards, side panels and number plates may have different mounting points or shapes. Always check the specific year range and compatibility information before ordering replacement bodywork.
Common maintenance items include air filters, spark plugs, brake pads, chains, sprockets, wheel bearings, fork seals and engine servicing components. Maintenance requirements vary depending on whether your bike is two-stroke or four-stroke, how frequently you ride and the conditions you encounter. Follow your motorcycle manufacturer's recommended service schedule.
Some components, such as certain brake, suspension or chassis parts, may be shared between related models. However, engine components, exhaust systems, fuel-system parts and many servicing items are usually different. Even when two motorcycles have the same engine capacity, you should never assume their parts are interchangeable without checking the exact specifications.
VintCo WAT013 is a thrust washer for connecting rod applications, intended for use where controlled axial spacing and support are required within the assembly. This part is supplied individually.Features Thrust washer for connecting rod component applications Supplied individually Specifications VintCo Part Number: WAT013 Type: Thrust washer Dimensions: 24.2 x 29 x 2 mm
£8.98
VintCo WAT012 is a connecting rod thrust washer designed for use in connecting rod assemblies. It is supplied as an individual replacement component and measures 25.25 x 40 x 1 mm.Features Connecting rod thrust washer Individual replacement component Intended for connecting rod component service and rebuild work Specifications VintCo Part Number: WAT012 Product Type: Connecting rod thrust washer Dimensions: 25.25 x 40 x 1 mm Quantity Supplied: 1
£8.98
VintCo WAT011 is a thrust washer designed for connecting rod component applications. This replacement part is supplied individually and measures 24.25 x 41.5 x 1.5 mm.Features Thrust washer for connecting rod component applications Supplied individually Specifications VintCo Part Number: WAT011 Type: Thrust washer Dimensions: 24.25 x 41.5 x 1.5 mm
£8.98
VintCo WAT009 is a thrust washer for connecting rod applications, supplied individually for service and rebuild work.Features Thrust washer for connecting rod components Supplied individually Specifications VintCo Part Number: WAT009 Dimensions: 27.25 x 44 x 1 mm
£8.98
The VintCo WAT007 is a thrust washer intended for connecting rod component applications. It is supplied individually and manufactured to a size of 18.25 x 27.8 x 1 mm for use where this washer specification is required.Features Suitable for connecting rod component applications Supplied individually Specifications VintCo Part Number: WAT007 Product type: Thrust washer Dimensions: 18.25 x 27.8 x 1 mm Item category: Connecting Rod Components
£8.98
VintCo WAT006 is a connecting rod thrust washer supplied as an individual replacement component for compatible connecting rod assemblies. It is sized at 22.25 x 37.1 x 1 mm.Features Connecting rod thrust washer Replacement component for connecting rod assemblies Sold individually Specifications VintCo Part Number: WAT006 Dimensions: 22.25 x 37.1 x 1 mm
£8.98
VintCo WAT004 is a thrust washer intended for applications requiring a 24.25 x 40 x 1 mm washer. It is supplied as a single individual unit for replacement or service use.Features Thrust washer Suitable for replacement or service applications Sold individually Specifications VintCo Part Number: WAT004 Size: 24.25 x 40 x 1 mm
£8.98
VintCo WAT003 is a thrust washer for connecting rod assembly service and replacement. It is supplied individually and is intended for applications requiring a 22.25 x 34.9 x 1 mm washer.Features Connecting rod component Thrust washer for service or replacement use Sold individually Specifications VintCo Part Number: WAT003 Product Type: Thrust washer Inner Diameter: 22.25 mm Outer Diameter: 34.9 mm Thickness: 1 mm
£8.98
VintCo WAT002 is a thrust washer for connecting rod applications, intended for use within compatible engine assemblies to control axial spacing between components. It is supplied individually.Features Designed for connecting rod component applications Used to control axial movement and spacing between mating parts Supplied as a single washer Specifications VintCo Part Number: WAT002 Product type: Thrust washer Dimensions: 18.25 x 24.5 x 2 mm
£8.98
The VintCo SUC02 air shock upper cap kit is a rebuild part for Fox and VintCo air shocks, intended to replace the original Fox or VintCo upper cap and keep the shock in service. It is produced using modern materials and manufacturing techniques to provide fitment equal to or better than the original Fox air shock upper cap. Each kit includes one shock upper cap and one shock cap bushing, and one kit services one shock.Features Replacement upper cap kit for Fox and VintCo air shocks Replaces the original Fox or VintCo air shock upper cap Intended for rebuilding one shock Includes one shock upper cap Includes one shock cap bushing Part of the VintCo range of rebuild parts for Fox air shocks Specifications VintCo Part Number: SUC02 Compatible shock lengths: 13.5 in, 14.25 in, 14.75 in, 15.125 in, 15.5 in, 15.75 in, 17 in Kit contents: 1 shock upper cap, 1 shock cap bushing Quantity required: 1 kit per shock Item category: Air Shock Rebuild Parts
£81.80
This air shock upper cap kit is a rebuild part for Fox and VintCo air shocks in 16, 16.25 and 17.5 inch lengths. It replaces the VintCo or original Fox air shock upper cap and is manufactured using modern materials and production techniques for fit comparable to the original Fox air shocks. The kit includes one shock upper cap and one shock cap bushing, with one kit intended to rebuild one shock.Features Replacement rebuild part for Fox and VintCo air shocks Replaces VintCo or original Fox air shock upper caps Intended to rebuild one shock Two kits are required to rebuild two shocks Manufactured using modern materials and production techniques Part of the VintCo range of Fox air shock rebuild parts Specifications VintCo Part Number: SUC01 Product Type: Air shock upper cap kit Product Category: Air Shock Rebuild Parts Compatible shock lengths: 16 in, 16.25 in, 17.5 in Included components: 1 shock upper cap Included components: 1 shock cap bushing Kit quantity: 1 kit Rebuild coverage: 1 shock
£81.80
Cylinder sleeve for 1987-1990 Yamaha YZ490 models, manufactured for VintCo by Advanced Sleeve. This 87 mm sleeve is intended for cylinder rebuilding applications and is specified for use with piston part PSY36-00.Features Manufactured for VintCo by Advanced Sleeve Intended for cylinder rebuilding applications Designed for use with piston part PSY36-00 Specifications VintCo Part Number: SLY36B Bore: 87-93 mm Height: 160.9 mm OD: 97.0 mm Flange OD: 100.8 mm Flange Height: 5.2 mm Wall Thickness: 5.6 mm Intake: 35.2 mm Exhaust Port Location: 45.6 mm Vehicle Fitments 1987 Yamaha YZ490 1988 Yamaha YZ490 1989 Yamaha YZ490 1990 Yamaha YZ490
£224.11
This cylinder sleeve is a replacement component for the 1981 Yamaha YZ80, intended for rebuilding original cylinders on vintage machines where complete replacements can be difficult to source. Made in the USA for VintCo by Advanced Sleeve, it uses modern materials and manufacturing methods and is supplied with installation dimensions for use by an experienced and qualified machinist. The port angles are arranged to reduce port-matching work, and the sleeve can be bored and honed to suit the stock-size VintCo piston kit.Features Replacement cylinder sleeve for vintage Yamaha YZ80 applications Fits 1981 Yamaha YZ80 Made for VintCo by Advanced Sleeve Designed to help restore worn or damaged original cylinders Ports angled to reduce port-matching work compared with other sleeves Can be bored and honed to suit the stock-size VintCo piston kit Intended for installation by an experienced and qualified machinist Specifications VintCo Part Number: SLY12A Piston Part Number: PSY12-00 Material: Cast iron Country of manufacture: USA Bore: 49 mm Height: 99.7 mm Outside diameter: 59.7 mm Flange outside diameter: 62.9 mm Flange height: 3.8 mm Wall thickness: 5.7 mm Intake: 20.5 mm Exhaust port location: 21.6 mm Vehicle Fitments1981 Yamaha YZ80
£173.93
This VintCo cylinder sleeve is a cast-iron replacement sleeve for the 1980 Yamaha YZ80, intended for restoring serviceability when an original cylinder is difficult to source. Made in the USA for VintCo by Advanced Sleeve, it is produced using modern materials and manufacturing methods to provide OEM-level or better fitment and performance. The port angles are set to reduce the amount of port matching required, and the sleeve can be bored and honed to suit the stock-size VintCo piston kit. All dimensions are supplied for installation by an experienced and qualified machinist.Features Replacement cylinder sleeve for vintage motorcycles Fits 1980 Yamaha YZ80 models Suitable when a replacement cylinder is difficult to find Port angles set to reduce port matching work during installation Can be bored and honed to suit the stock-size VintCo piston kit Intended for installation by an experienced and qualified machinist Specifications VintCo Part Number: SLY11C Product type: Cylinder sleeve Material: Cast iron Manufactured in: USA Made for VintCo by: Advanced Sleeve Compatible piston part number: PSY11-00 Bore: 49 mm Height: 99.7 mm Outside diameter: 59.7 mm Flange outside diameter: 62.9 mm Flange height: 3.8 mm Wall thickness: 5.7 mm Intake: 20.5 mm Exhaust port location: 21.6 mm Vehicle Fitments1980 Yamaha YZ80
£173.93
This VintCo cylinder sleeve is a replacement liner for the 1977 Yamaha YZ80, intended for rebuilding worn or damaged original cylinders on vintage machines where complete replacements can be difficult to source. It is manufactured in the USA from cast iron using modern production methods, with correctly angled ports to reduce port-matching work during installation. All dimensions are provided for installation by an experienced and qualified machinist, and the sleeve can be bored and honed to suit the stock-size VintCo piston kit.Features Replacement cylinder sleeve for vintage Yamaha YZ80 engines Intended for rebuilding worn or damaged cylinders Designed for installation by an experienced and qualified machinist Correctly angled ports reduce port-matching work Can be bored and honed to suit the stock-size VintCo piston kit Produced using modern manufacturing techniques for OEM-style fitment and performance Specifications VintCo Part Number: SLY11B Product Type: Cylinder Sleeve Material: Cast iron Country of Manufacture: USA Made for VintCo by Advanced Sleeve Compatible Piston Part Number: PSY11-00 Bore: 49 mm Height: 100.6 mm Outside Diameter: 58.4 mm Flange Outside Diameter: 61 mm Flange Height: 3.8 mm Wall Thickness: 5.1 mm Intake: 21 mm Exhaust Port Location: 22.6 mm Vehicle Fitments1977 Yamaha YZ80
£173.93
This VintCo cylinder sleeve is a cast-iron replacement sleeve for the 1976 Yamaha YZ80, intended for vintage applications where a complete replacement cylinder may be difficult to obtain. Made in the USA for VintCo by Advanced Sleeve, it is manufactured using modern production methods for OEM-equivalent fitment and performance, with correctly angled ports to reduce port-matching work. It is intended for installation by an experienced and qualified machinist and can be bored and honed to suit a stock-size VintCo piston kit.Features Replacement cylinder sleeve for vintage Yamaha YZ80 applications Suitable for restoring worn or damaged cylinders Correctly angled ports to reduce port-matching work during installation Can be bored and honed to suit a stock-size VintCo piston kit Intended for installation by an experienced and qualified machinist Specifications VintCo Part Number: SLY11A Made for VintCo by Advanced Sleeve Material: Cast iron Country of manufacture: USA Piston Part Number: PSY11-00 Bore: 49 mm Height: 101.7 mm Outside diameter: 58 mm Flange outside diameter: 60.6 mm Flange height: 3.8 mm Wall thickness: 5 mm Intake: 20.5 mm Exhaust port location: 23 mm Vehicle Fitments1976 Yamaha YZ80
£173.93
VintCo SLY09A is a replacement cast-iron cylinder sleeve for 1980-1981 Yamaha YZ250 and 1981 Yamaha IT250 models. Made in the USA for VintCo by Advanced Sleeve, it is intended for restoring worn or damaged vintage cylinders and is supplied with the dimensional information required for installation by an experienced and qualified machinist.Features Replacement cylinder sleeve for vintage Yamaha applications Suitable for restoring original cylinders that require re-sleeving Correctly angled ports to reduce port-matching work Can be bored and honed to suit a stock-size VintCo piston kit Manufactured using modern materials and production techniques Specifications VintCo Part Number: SLY09A Compatible piston kit part number: PSY09-00 Material: Cast iron Country of manufacture: USA Made for VintCo by Advanced Sleeve Bore: 70 mm Height: 135.5 mm Outside diameter: 80.7 mm Flange outside diameter: 83.9 mm Flange height: 5.1 mm Wall thickness: 5.9 mm Intake: 35 mm Exhaust port location: 35.4 mm Vehicle Fitments 1980 Yamaha YZ250 1981 Yamaha YZ250 1981 Yamaha IT250
£208.93
This VintCo cylinder sleeve is a replacement sleeve for 1977-1979 Yamaha YZ175 and IT175 models, intended for restoring original cylinders on vintage machines where replacement cylinders can be difficult to source. Made in the USA for VintCo by Advanced Sleeve, it is produced using modern manufacturing methods for OEM-equivalent or better fitment and performance. The sleeve is supplied with dimensional information for installation by an experienced and qualified machinist, features correctly angled ports to reduce port-matching work, and can be bored and honed to suit a stock-size VintCo piston kit.Features Replacement cylinder sleeve for vintage Yamaha YZ175 and IT175 models Suitable for restoring original cylinders when replacements are difficult to obtain Made in the USA for VintCo by Advanced Sleeve Produced using modern manufacturing techniques Designed for OEM-equivalent or better fitment and performance Correctly angled ports reduce port-matching work compared with other sleeves Can be bored and honed to suit a stock-size VintCo piston kit Intended for installation by an experienced and qualified machinist Specifications VintCo Part Number: SLY08A Piston Part Number: PSY08-00 Material: Cast iron Bore: 66 mm Height: 117.2 mm Outer Diameter: 72.1 mm Flange Outer Diameter: 74.6 mm Flange Height: 5.1 mm Wall Thickness: 3.6 mm Intake: 24.5 mm Exhaust Port Location: 24.5 mm Vehicle Fitments 1977 Yamaha IT175 1977 Yamaha YZ175 1978 Yamaha IT175 1978 Yamaha YZ175 1979 Yamaha IT175 1979 Yamaha YZ175
£198.44
Replacement cast-iron cylinder sleeve for 1980-1981 Yamaha YZ465 models. This USA-made sleeve is manufactured for VintCo by Advanced Sleeve for vintage cylinder repair where replacement cylinders can be difficult to source. It is produced using modern manufacturing methods for OEM-style fitment and performance, with correctly angled ports to reduce port-matching work, and it can be bored and honed for use with the stock-size VintCo piston kit.Features Replacement cylinder sleeve for vintage Yamaha YZ465 cylinders Suitable where original replacement cylinders are difficult to obtain Designed for OEM-style fitment and performance Correctly angled ports reduce port-matching work during installation Can be bored and honed to suit the stock-size VintCo piston kit Intended for installation in the cylinder by an experienced and qualified machinist Supports restoration and continued use of vintage machines Specifications VintCo Part Number: SLY06A Made for VintCo by Advanced Sleeve Country of manufacture: USA Material: Cast iron Compatible piston part number: PSY06-00 Bore: 85 mm Height: 161.1 mm Outside diameter: 95.4 mm Flange outside diameter: 98.1 mm Flange height: 5.1 mm Wall thickness: 5.8 mm Intake: 15 mm Exhaust port location: 45.7 mm Vehicle Fitments 1980 Yamaha YZ465 1981 Yamaha YZ465
£224.11
This VintCo cylinder sleeve is a replacement cast-iron sleeve for vintage Yamaha YZ400 and IT400 cylinders, intended for use on 1976-78 YZ400 and 1976 IT400 applications. Made in the USA for VintCo by Advanced Sleeve, it is produced with modern manufacturing methods for OEM-style fitment and is supplied with full dimensional information for installation by an experienced and qualified machinist.Features Replacement cylinder sleeve for vintage Yamaha models Suitable for rebuilding worn or damaged original cylinders Ports are correctly angled to reduce port-matching work Can be bored and honed to suit a stock-size VintCo piston kit Intended for installation by an experienced and qualified machinist Specifications VintCo Part Number: SLY04A Made for VintCo by Advanced Sleeve Material: Cast iron Country of manufacture: USA Bore: 85 mm Height: 145.4 mm Outside diameter: 95.9 mm Flange outside diameter: 98.7 mm Flange height: 5.1 mm Wall thickness: 5.9 mm Intake: 32 mm Exhaust port location: 36.2 mm Compatible piston part number: PSY04-00 Vehicle Fitments 1976 Yamaha YZ400 1976 Yamaha IT400 1977 Yamaha YZ400 1978 Yamaha YZ400
£224.11
VintCo SLY01B is a replacement cylinder sleeve for the 1980 Yamaha YZ125. It is manufactured in the USA for VintCo by Advanced Sleeve and is intended for vintage machines where a replacement cylinder can be difficult to source. Produced using modern materials and manufacturing techniques, it is designed for OEM-equivalent or better fitment and performance. The sleeve features correctly angled ports to reduce port-matching work, and full dimensions are provided for installation by an experienced, qualified machinist. It can also be bored and honed to suit a stock-size VintCo piston kit.Features Replacement cylinder sleeve for vintage Yamaha YZ125 engines Intended for use where an original replacement cylinder is difficult to find Designed for installation by an experienced, qualified machinist Correctly angled ports to reduce port-matching work Can be bored and honed to suit a stock-size VintCo piston kit Designed for OEM-equivalent or better fitment and performance Specifications VintCo Part Number: SLY01B Product type: Cylinder sleeve Manufactured for VintCo by Advanced Sleeve Country of manufacture: USA Material: Cast iron Compatible piston part number: PSY01-00 Bore: 56 mm Height: 106.7 mm Outside diameter: 62.1 mm Flange outside diameter: 64.8 mm Flange height: 5.1 mm Wall thickness: 3.5 mm Intake: 32.5 mm Exhaust port location: 25.7 mm Vehicle Fitments1980 Yamaha YZ125
£185.60
VintCo SLY01A is a 56 mm replacement cylinder sleeve for 1974-1976 Yamaha YZ125 models. Made in the USA for VintCo by Advanced Sleeve, this cast-iron sleeve is intended for installation in the original cylinder by an experienced and qualified machinist. It is manufactured using modern materials and production methods, with correctly angled ports to reduce port-matching work, and it can be bored and honed to suit the stock-size VintCo piston kit PSY01-00.Features Replacement cylinder sleeve for vintage Yamaha YZ125 models Made in the USA for VintCo by Advanced Sleeve Intended for installation by an experienced and qualified machinist Correctly angled ports reduce port-matching work Can be bored and honed to suit stock-size VintCo piston kit PSY01-00 Manufactured using modern materials and production methods for OEM-equivalent fitment and performance Dimensional data provided for machining and installation Specifications VintCo Part Number: SLY01A Material: Cast iron Bore: 56 mm Height: 117.5 mm Outside Diameter: 59.9 mm Flange Outside Diameter: 63.5 mm Flange Height: 5.2 mm Wall Thickness: 3.6 mm Intake: 22.5 mm Exhaust Port Location: 25.4 mm Vehicle Fitments 1974 Yamaha YZ125 1975 Yamaha YZ125 1976 Yamaha YZ125
£185.60
VintCo SLU08A is a USA-made cast-iron cylinder sleeve for 1972-1975 Husqvarna CR450 and WR450 models, manufactured for VintCo by Advanced Sleeve. It is intended as a replacement for vintage machines where an original cylinder may be difficult to source, and is produced using modern materials and manufacturing methods to provide OEM-equivalent fit and performance. Installation dimensions are provided for fitting by an experienced, qualified machinist.Features Replacement cylinder sleeve for vintage Husqvarna CR450 and WR450 models Intended for use when an original cylinder is difficult to obtain Correctly angled ports reduce the amount of port-matching work required compared with other sleeves Can be bored and honed to suit the stock-size VintCo piston kit Manufactured for VintCo by Advanced Sleeve Specifications VintCo Part Number: SLU08A Material: Cast iron Country of Manufacture: USA Bore: 84 mm Height: 170.3 mm Outer Diameter: 94.2 mm Flange Outer Diameter: 99.9 mm Flange Height: 8 mm Wall Thickness: 5.6 mm Intake: 28.2 mm Exhaust Port Location: 52 mm Compatible VintCo Piston Part Number: PSU08-00 Vehicle Fitments 1972 Husqvarna CR450 1972 Husqvarna WR450 1973 Husqvarna CR450 1973 Husqvarna WR450 1974 Husqvarna CR450 1975 Husqvarna CR450 1975 Husqvarna WR450
£224.11
VintCo SLU07A is a cylinder sleeve for 1972-1973 Husqvarna CR125 and WR125 models. Made for VintCo by Advanced Sleeve, it is intended for 125 applications and is matched for use with piston part PSU07-00.Features Cylinder sleeve for Husqvarna CR125 and WR125 models Made for VintCo by Advanced Sleeve Suitable for use with piston part PSU07-00 Specifications VintCo Part Number: SLU07A Piston Part Number: PSU07-00 Bore: 55 mm Height: 106.8 mm Outside Diameter: 65.2 mm Flange Outside Diameter: 72.1 mm Flange Height: 7.5 mm Wall Thickness: 5.6 mm Intake: 20.7 mm Exhaust Port Location: 30.4 mm Vehicle Fitments 1972 Husqvarna CR125 1972 Husqvarna WR125 1973 Husqvarna CR125 1973 Husqvarna WR125
£185.60
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