Dirt Motorcycle Engine Parts

Standard bore cylinder kit with gaskets for 250 cc applications, designed for KTM EXC-F and SX-F models. Supplied with an 81 mm cylinder and gasket set. Piston not included. Features Standard bore cylinder kit Supplied with gaskets Suitable for 250 cc applications Piston not included Specifications Bore diameter: 81 mm Capacity: 250 cc Vehicle Fitments KTM EXC-F 250 cc 2024–2026 KTM SX-F 250 cc 2023–2026

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Starter Motor Husqvarna TE 150i 2020-2022 TE 150 2023 TE 150 Heritage 2023 KTM 125 XC 2021-2022 150 EXC TPI 2020-2023 150 XC-W TPI 2020-2022 150 XC-W 2023

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PSYCHIC Intake Valve XU-09554I SIZE: 36.95x5.47x83.68mm Features a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. This provides reduced friction for quicker/higher revs and a longer valve life. Replaces OEM# 1SL-12111-00-00 Sold each Application: YAMAHA YZ 450 F 2014-2018 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years YAMAHA YZ F 450 2014-2019 YAMAHA YZ FX 450 2016-2020 YAMAHA WR F 450 2016-2020

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Oil Seal 38x52x8 CRANKSHAFT 1996 RM250 CRANKSHAFT 1997 RM250 CRANKSHAFT 1998 RM250 CRANKSHAFT 1999 RM250 CRANKSHAFT 2000 RM250 CRANKSHAFT 2001 RM250 CRANKSHAFT (MODEL K1-K2) 2002 RM250 CRANKSHAFT (MODEL K1-K2) 2003 RM250 CRANKSHAFT (MODEL K1-K2) 2004 RM250 CRANKSHAFT (MODEL K1-K2) PROX 41.3-38021 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years SUZUKI RM 250 2000-2002

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This 6-hole fuel injector is a direct OEM replacement for selected Yamaha 125cc models, designed to deliver precise fuel atomisation and stable fuel delivery while matching the original fit and function. Features Supports reliable fuel delivery and consistent engine performance Manufactured to exacting standards for confident engine rebuilding Meets or exceeds OEM quality requirements Direct OEM replacement Designed for straightforward installation Professional installation recommended if unsure Check the product image before ordering to avoid incorrect fitment Intended as a cost-effective replacement option Specifications Injector type: 6-hole fuel injector Construction: high-tech materials Cross-Reference OEM Part Numbers 5D7-13770-00 Vehicle Fitments Yamaha WR125R (22B) 2009–2014 Yamaha WR125X (22B) 2009–2014 Yamaha YZF-R125 (5D7) 2008–2013

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Features: -Made from 7075 aerospace aluminium construction. -Hardened steel spline -Forged grooves at the tip of the lever -Smooth shaft design to reduce surface wear. -CNC machined billet flexible tip. -Colour anodised to prevent corrosion. KAWASAKI KX 500 1998 - 2004 FACTORY IMAGE RACING Kickstart Levers are manufactured with quality forged aluminuim to increase strength and durability. They are specially designed with a hardened steel spline for increased strength. Our Kickstart Levers are also treated with an Anodized surface finish in various colours to increase the longevity and maintain a stylish appearance.

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ATHENA Complete Gasket Kit (oil seals included) - P400462900003 Athena offers the widest range of replacement engine gaskets available on the market, boasting over 40 years of experience in the field. Athena’s gasket kits are entirely engineered in Italy with a strong base of internal know-how. Each piece is produced following strict parameters imposed by manufacturers, and the use of the latest generation lasers guarantees perfect cutting quality. Athena performs surface treatments to compensate for irregularities and follows material stress-relieving processes to improve sealing in the most critical areas. Why choose the complete engine gasket kit? Athena’s gaskets have low moisture absorption, highest mechanical resistance, resistance to oils and gasoline, resistance to high temperatures and pressures, and easy removal. This kit includes all the gaskets and oil seals for a complete engine overhaul (oil seals included). Compatible Models: Easy to install but if unsure please use a professional. Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years SHERCO SEF R 300 2019 SHERCO SEF R 300 2018 SHERCO SEF R 300 2014-2017 SHERCO SEF R 300 2014-2019 SHERCO SEF R 300 2014-2020

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This starter bendix is designed for consistent performance and durability, utilizing high-tech materials and precise manufacturing standards. It serves as a direct OEM replacement and is compatible with a range of BETA Enduro and Xtrainer models. Features Unmatched reliability and performance from high-tech materials Manufactured to exacting standards for engine rebuild confidence Meets or exceeds OEM quality Direct OEM replacement Visual confirmation via image recommended before ordering Best value for money Easy to install; professional assistance recommended if unsure Specifications High-quality replacement part Designed for long-lasting performance Cross-Reference OEM Part Numbers 026.07.010.00.00 Vehicle Fitments BETA Enduro RR/Xtrainer 250 300 2013-2023 BETA Enduro RR 200 2019-2023

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Boyesen Factory Racing Black Clutch Cover - CC-31B High-tech clutch and ignition covers are made from durable, lightweight aluminum Built to precise tolerances to prevent warping Powder-coated finish Part No. 05-833.BK (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years YAMAHA YZ 125 1994-2004

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Part No. 01-122.WE (radhouse.co.uk) Three Bond 1211 Silicone White Liquid Vacuum Pump Gasket Maker, 3.5 oz. tube Sillicone liquid gasket. Excellent heat and chemical resistance.O.E.M. approved. Available in white only. The Three Bond 1211 is a free flowing, low viscosity, one compound RTV silicone rubber. Three Bond 1211 is ideal for vacuum places where long, faultless seal is critical. Recommended for sealing vacuum flange surfaces and screw sections inside vacuum pumps to prevent vacuum, oil, water, and chemical leaks. Three Bond 1211 is effective over a wide temperature range, -76 degrees F to 482 degrees F. Tack free in 90 minutes; fully cured in 24 hours. Quanity 3.5 oz. tube.

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Titanium intake valve for Triumph TF 450-RC, TF 450-E and TF 450-C models. ProX part number 28.7425-2, intended for intake valve position and cross-referenced to OEM part number T1132133. Features Replacement intake valve Suitable for Triumph TF 450-RC models Suitable for Triumph TF 450-E models Suitable for Triumph TF 450-C models Specifications Outside diameter: 39.25 mm Length: 85.60 mm Stem diameter: 5.97 mm Valve position: Intake Material: Titanium Manufacturer part number: 28.7425-2 OEM reference number: T1132133 Cross-Reference OEM Part Numbers T1132133 Vehicle Fitments Triumph TF 450-RC 2025-2025 Triumph TF 450-E 2025-2026 Triumph TF 450-C 2026-2026

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Titanium exhaust valve for Triumph TF 450-RC, TF 450-E and TF 450-C models. ProX part number 28.7425-1, intended for the exhaust valve position and cross-referenced to OEM part number T1132132. Features Replacement exhaust valve Suitable for Triumph TF 450-RC models Suitable for Triumph TF 450-E models Suitable for Triumph TF 450-C models Specifications Outside diameter: 34.55 mm Length: 85.20 mm Stem diameter: 5.95 mm Valve position: Exhaust Material: Titanium Manufacturer part number: 28.7425-1 OEM reference number: T1132132 Cross-Reference OEM Part Numbers T1132132 Vehicle Fitments Triumph TF 450-RC 2025-2025 Triumph TF 450-E 2025-2026 Triumph TF 450-C 2026-2026

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Titanium exhaust valve for Triumph TF 250-X, TF 250-E and TF 250-C models. ProX part number 28.7324-1, intended for the exhaust valve position and cross-referenced to OEM part number T1139985. Features Replacement exhaust valve Suitable for Triumph TF 250-X models Suitable for Triumph TF 250-E models Suitable for Triumph TF 250-C models Specifications Outside diameter: 26.80 mm Length: 98.40 mm Stem diameter: 4.97 mm Valve position: Exhaust Material: Titanium Manufacturer part number: 28.7324-1 OEM reference number: T1139985 Cross-Reference OEM Part Numbers T1139985 Vehicle Fitments Triumph TF 250-X 2024-2026 Triumph TF 250-E 2025-2026 Triumph TF 250-C 2026-2026

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Forged piston kit for selected KTM, Husqvarna and GASGAS 250 cc four-stroke motorcycles from 2023 to 2027. This Athena piston kit is designed for the specified 249.92 cc engine applications and provides the piston, ring and pin configuration required for compatible engine rebuilds and maintenance. Specifications Piston size: 80.96 mm Nominal size: 81 mm Piston type: Forged Compression height: 19.50 mm Compression ratio: 14.5:1 Displacement: 249.92 cc Number of piston rings: 2 Piston pin type: Standard Big-end pin diameter specification: 16 x 8.5 x 38.2 mm Cross-Reference OEM Part Numbers Athena: S5F08100001A Vehicle Fitments GASGAS EC-F 250 cc: 2024–2025 GASGAS EX-F 250 cc: 2024–2025 GASGAS MC-F 250 cc: 2024–2027 Husqvarna FC 250 cc: 2023–2027 Husqvarna FE 250 cc: 2024–2027 KTM EXC-F 250 cc: 2024–2027 KTM SX-F 250 cc: 2023–2027 KTM XC-F 250 cc: 2023–2027

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Big bore cylinder kit for the Yamaha YZ-F 250 cc from 2025 to 2026, designed to increase engine displacement to 304.15 cc and provide increased torque and power throughout the RPM range while retaining the motorcycle’s agility and responsiveness. The kit combines an oversized cylinder and forged piston assembly with the pre-calibrated GET Boost electronic module, providing the components required for the increased-capacity engine configuration. Features High-grade cylinder with oversized steel liner Forged performance piston supplied with pin and rings Includes all necessary gaskets GET Boost electronic module included GET Boost is pre-calibrated specifically for the big bore configuration Installs without ECU or wiring modifications Dedicated harness connects directly to the injector and throttle body Pre-mapped power curve for safe and reliable operation with the new cylinder Developed using experience from MXGP and AMA racing Designed for smooth, progressive power delivery across the RPM range MLS head gasket provides combustion sealing and long-term durability Specifications Bore diameter: 85.00 mm Bore gain: +8 mm Compression ratio: 13.3:1 Displacement: 304.15 cc Cylinder material: high-silicon aluminium alloy Cylinder liner: steel Liner construction: proprietary co-casting process Piston: forged and CNC-machined Piston coating: molybdenum disulphide Piston pin coating: DLC Head gasket type: MLS (Multi-Layer Steel) Head gasket material: laser-cut stainless steel Cross-Reference OEM Part Numbers Athena: P400485100112 Vehicle Fitments Yamaha YZ-F 250 cc: 2025–2026

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Standard replacement cylinder for Yamaha YZ 250 two-stroke models, supplied as a cylinder only. This standard-size cylinder is intended as a direct replacement component for engine rebuild or repair on compatible motorcycles. Features Replacement standard cylinder Cylinder only Suitable for engine repair or rebuild Direct replacement for compatible Yamaha YZ 250 models Specifications Standard size Bore: 66.40 mm Engine type: 2-stroke Cross-Reference OEM Part Numbers 5UP-11311-21 Vehicle Fitments Yamaha YZ 250 1999-2025

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Exhaust muffler gasket for selected Yamaha WR-F, YZ-F and YZ-FX 250 cc and 450 cc motorcycles, designed to seal the exhaust connection and help prevent exhaust gas leakage at the muffler joint. This Athena gasket is suitable as a replacement component for the specified applications and cross-references the corresponding Yamaha OEM part number. Specifications External diameter: 54.00 mm Internal diameter: 49.00 mm Height: 30.00 mm Cross-Reference OEM Part Numbers Athena: S410485012075 Yamaha: 1SL-14714-00-00 Vehicle Fitments Yamaha WR-F 250 cc: 2015–2026 Yamaha WR-F 450 cc: 2016–2026 Yamaha YZ-F 250 cc: 2014–2027 Yamaha YZ-F 450 cc: 2014–2027 Yamaha YZ-FX 250 cc: 2015–2027 Yamaha YZ-FX 450 cc: 2016–2027

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Exhaust muffler gasket for selected Yamaha WR-F, YZ-F and YZ-FX 250 cc motorcycles, designed to seal the exhaust connection and help prevent exhaust gas leakage at the muffler joint. This Athena gasket is suitable as a replacement component for the specified applications and cross-references the corresponding Yamaha OEM part number. Specifications External diameter: 40.70 mm Internal diameter: 35.00 mm Height: 30.00 mm Cross-Reference OEM Part Numbers Athena: S410485012074 Yamaha: 19D-14755-00-00 Vehicle Fitments Yamaha WR-F 250 cc: 2019–2026 Yamaha YZ-F 250 cc: 2020–2026 Yamaha YZ-FX 250 cc: 2020–2027

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Exhaust muffler gasket for selected Honda CBR and CRF motorcycles, designed to seal the exhaust connection and help prevent exhaust gas leakage at the muffler joint. This Athena gasket is suitable as a replacement component for the specified applications and cross-references the corresponding Honda OEM part number. Specifications External diameter: 58.00 mm Internal diameter: 48.70 mm Height: 11.00 mm Cross-Reference OEM Part Numbers Athena: S410210012097 Honda: 18392-MEL-000 Vehicle Fitments Honda CBR RR 1000 cc: 2004–2007 Honda CRF R 250 cc: 2022–2026 Honda CRF RX 250 cc: 2022–2026 Honda CRF RX 300 cc: 2022–2026

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Exhaust muffler gasket for Honda CRF F 110 and CRF F 125 motorcycles from 2019 to 2026, designed to seal the exhaust connection and help prevent gas leakage at the muffler joint. This Athena gasket is suitable as a direct replacement for the specified applications. Specifications External diameter: 28.00 mm Internal diameter: 22.50 mm Height: 25.00 mm Cross-Reference OEM Part Numbers Athena: S410210012096 18391-K28-A60 Vehicle Fitments Honda CRF F 110 cc: 2019–2026 Honda CRF F 125 cc: 2019–2026

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This connecting rod rebuild kit is a replacement assembly for Yamaha YZ125 models from 2005 to 2019. It is supplied as a complete conrod kit including the rod, crankpin, crankpin bearing, top end bearing and thrust washers where required, and is intended for use with both aftermarket and OE crankshafts. Specifications Material: SNCM220 Certified chrome alloy steel rod construction Crankpin manufactured from hot-rolled ASTM steel Crankpin case hardened Thrust washers manufactured from bronze phosphor Thrust washers silver coated Centre to centre: 102 mm Small end bearing: 15 x 19 x 17.2 mm Small end bore Ø: 19 mm Small end width: 17 mm Big end bearing: 22 x 29 x 16.0 mm Big end bore Ø: 29 mm Big end width: 16 mm Big end pin Ø: 22 mm Big end pin length: 54.20 mm Washer thickness: 22 x 34.5 x 1.50 mm Cross-Reference OEM Part Numbers RX-40016, MX-09084 HOT RODS 8629 WOSSNER P2018 RY-2205 1C3-11650-00-00, 1C3-11651-00-00, 3JD-11681-10-00, 90209-22326-00, 93310-52238-00, 93310-21510-00, 1C3-11651-00-00M Vehicle Fitments Yamaha YZ125 (2005-2019) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years GAS-GAS EC 300 2000-2015 YAMAHA YZ X 125 2020-2021 YAMAHA YZ 125 2005-2018 YAMAHA YZ 125 2005-2021 YAMAHA YZ 125 2005-2020 YAMAHA YZ X 125 2020 YAMAHA YZ 125 2005-2019 YAMAHA YZ 125 2005-2016 YAMAHA YZ 125 2005-2015

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Athena complete gasket set for Ducati Desmo 450 MX motorcycles with 449.6 cc engine capacity, suitable for 2026 model year applications. This set, supplied under part number P400110900067, includes all gaskets and seals required for complete engine rebuilds, matches OEM off-road engine specifications, is designed for extreme and prolonged operating conditions, and was developed with factory teams in MXGP and AMA. Features Complete gasket set Includes all gaskets and seals for complete engine rebuilds Matches OEM off-road engine specifications Designed for extreme and prolonged conditions Developed with factory teams in MXGP and AMA Specifications Manufacturer: Athena Part number: P400110900067 Engine capacity: 449.6 cc Model year: 2026 Vehicle Fitments Ducati Desmo 450 MX 449.6 cc 2026

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This Wrench Rabbit Complete Engine Rebuild Kit (Part No. WR101-022) is designed for the 2007 Honda CRF250R. It includes nearly all components required for a comprehensive engine overhaul, combining top-tier components from Vertex and Hot Rods. The kit features a standard compression piston, crankshaft with connecting rod, complete bearing and seal kits, and a full gasket set, streamlining the rebuild process into a single, convenient package. Features All-in-one engine rebuild kit for professional-grade overhaul Vertex piston kit with standard compression piston Hot Rods heavy-duty crankshaft with stock stroke Includes main bearings, transmission bearings, and counter balancer bearings Complete water pump and oil seal kits Full gasket kit with O-rings for top and bottom ends Specifications Bore Size: 78mm Crankshaft: Stock stroke, includes connecting rod Piston Kit: Standard compression piston, pin, rings, and clips Main Bearings: Included Transmission Bearing Kit: Includes output shaft collar and sprocket lock washer Counter Balancer Bearing Kit: Included Water Pump Bearing and Seal Kit: Included Gasket Kit: Vertex complete gasket set with seals and O-rings Cam Chain: Included Included Items Crankshaft with connecting rod installed Piston, piston pin, 2 circlips Top ring, 2 oil rings, oil ring spacers 30x72x16 crankshaft bearing, roller crankshaft bearing Counter balancer kit: 17x35x10 bearing, roller bearing Transmission bearing kit: 22x52x14 bearing, 17x35x10 bearing, needle bearing, race, tapered washer Cam chain Oil seal kit: 39x56x7, 28x37x7, 20x33x5, 16x25x5, 12x25x7, 12x22x5, 14x22x5, 10x21x5, 12x18x3 seals Water pump kit: 12x28x7 bearing, 12x25x7 seal, 12x22x5 seal, O-ring, gasket Vehicle Fitments Honda CRF250R 2007

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Part No. W6797 (radhouse.co.uk) KAWASAKI KX250F 2009 - 2014, Wiseco Clutch gasket (Wiseco Part no W6797) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KX F 250 2009-2019

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