Boyesen

Shop Boyesen reed valves and intake-related components for motocross and motorcycle engines.

889 products

  • Clutch Cover YZ125 94-04 Black, Boyesen CC-31B Clutch Cover YZ125 94-04 Black, Boyesen CC-31B

    Boyesen Clutch Cover YZ125 94-04 Black, Boyesen CC-31B

    4 in stock 1-2 business days

    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

    4 in stock 1-2 business days

    £286.46

  • RAD VALVE BLOCK REED RL-91, Boyesen Power Reeds for RL

    Boyesen RAD VALVE BLOCK REED RL-91, Boyesen Power Reeds for RL

    1 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL91 RL-91 Direct replacement reeds for Rad Valves To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp GAS GAS Enduro 200-250-300 EC 200   99-06 EC 300 99-05 EC 250   97-05 MC 250 98-05 Part No. 05-RL91 (radhouse.co.uk)

    1 in stock 1-2 business days

    £61.84

  • RAD VALVE BLOCK REED RL-20, Boyesen Power Reeds for RL

    Boyesen RAD VALVE BLOCK REED RL-20, Boyesen Power Reeds for RL

    3 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL20 Direct replacement reeds for Rad Valves To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp HONDA CR125R 1992 - 1997, KAWASAKI KDX200 1989 - 2002, KAWASAKI KDX220 1997 - 2002, Part No. 05-RL20 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KDX 200 1989-2006 HONDA CR 125 1992-1997 KAWASAKI KDX 220 1989-2006

    3 in stock 1-2 business days

    £59.89

  • Rad Valve Block Reed RL-19, Boyesen RL19

    Boyesen Rad Valve Block Reed RL-19, Boyesen RL19

    1 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL19 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. Honda ATC250R 1986 Honda CR250R 1984 - 1985 Honda TRX250R 1986 - 1989 Suzuki RM250 1990 - 1997 Yamaha YZ250 1996 Part No. 05-RL19 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years SUZUKI RM 250 1996-1997 YAMAHA YZ 250 1996

    1 in stock 1-2 business days

    £52.92

  • Rad Valve Block Reed RL-18, Boyesen RL18 CR500

    Boyesen Rad Valve Block Reed RL-18, Boyesen RL18 CR500

    10 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL-18 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. HONDA CR500 1990-2001 fits rad block. Part No. 05-RL18 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years HONDA CR 500 1990-2001

    10 in stock 1-2 business days

    £73.17

  • Rad Valve Block Reed RL-12, Boyesen RL12

    Boyesen Rad Valve Block Reed RL-12, Boyesen RL12

    1 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL-12 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. Fits Kawasaki KX250 1987 - 1998 RAD BLOCKS ONLY Part No. 05-RL12 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KX 250 1987-1993

    1 in stock 1-2 business days

    £44.30

  • Rad Valve Block Reed RL-11, Boyesen RL11

    Boyesen Rad Valve Block Reed RL-11, Boyesen RL11

    5 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL-11 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. FITS KTM FITTED WITH BOYESEN RAD BLOCKS ONLY. Honda CR125R 1988 - 1991 Kawasaki KX125 1988 - 1997 Suzuki RM125 1994 - 1997 Yamaha YZ125 1988 - 1998 Part No. 05-RL11 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years HUSQVARNA CR 125 1995-1997 HONDA CR 125 1988-1991 KAWASAKI KX 125 1995-1997 YAMAHA YZ 125 1995-1998 SUZUKI RM 125 1995-1997

    5 in stock 1-2 business days

    £65.18

  • Rad Valve Block Reed RL-08, Boyesen RL08 Rad Valve Block Reed RL-08, Boyesen RL08

    Boyesen Rad Valve Block Reed RL-08, Boyesen RL08

    5 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL-08 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. FITS KTM FITTED WITH BOYESEN RAD BLOCKS ONLY. ATK 350 MX 1989 KTM 350 -F 1987 - 1990 KTM 350 EGS 1990 KTM 350 MX 1988 - 1990 KTM 350 MXC 1987 - 1988 KTM 440 EXC 1994 - 1995 KTM 440 LC4 1994 - 1995 KTM 440 MXC 1994 - 1995 KTM 440 SX 1994 KTM 50-3 SX 1994 KTM 500 DXC 1989 KTM 500 EXC 1990 - 1992 KTM 500 LC4 1988 - 1992 KTM 500 MX 1985 - 1993 KTM 500 MXC 1985 - 1993 KTM 500 SX 1992 - 1993 KTM 500 SXR 1994 KTM 550 DXC 1992 KTM 550 MXC 1993 - 1996 Part No. 05-RL08 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KTM ALL 350 1950-2021 KTM ALL 440 1950-2021 KTM ALL 500 1950-2021 KTM ALL 550 1950-2021

    5 in stock 1-2 business days

    £64.36

  • Rad Valve Block Reed RL-03, Boyesen RL03

    Boyesen Rad Valve Block Reed RL-03, Boyesen RL03

    3 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL-03 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. FITTED WITH BOYESEN RAD BLOCKS ONLY. Kawasaki KX500 1987 - 2004 Part No. 05-RL03 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KX 500 1987-2004

    3 in stock 1-2 business days

    £71.88

  • Rad Valve Block Reed RL-02, Boyesen RL02

    Boyesen Rad Valve Block Reed RL-02, Boyesen RL02

    1 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL-02 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. FITS BIKS WITH BOYESEN RAD BLOCKS ONLY. Honda CR250R 1986 - 1999 Husqvarna WR250 1993 - 1997 Kawasaki KDX250 1991 - 1994 KTM 250 EXC 1995 - 1997 KTM 300 EXC 1990 - 1997 KTM 300 MXC 1990 - 1997 KTM 360 EXC 1996 - 1997 KTM 360 MXC 1996 - 1997 Suzuki DR250SE 1995 Suzuki LT250R QuadRacer 1988 - 1992 Suzuki RM250 1987 - 1993 Suzuki RMX250 1989 - 1995 Yamaha WR250 1991 - 1997 Yamaha YZ250 1989 - 1995 Part No. 05-RL02 (radhouse.co.uk) Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KDX 250 1991-1994 HONDA CR 250 1986-1998 YAMAHA WR 250 1992-1997

    1 in stock 1-2 business days

    £72.00

  • Rad Valve Block Reed RL-01, Boyesen RL01

    Boyesen Rad Valve Block Reed RL-01, Boyesen RL01

    1 in stock 1-2 business days

    Boyesen Power Reeds for RL Rad Valves - RL01 NOTE: Direct replacement reeds for Rad Valves -To determine if you have a RL or RR Rad Valve, look for a stamp RL in the casting; the RR Rad Valve does not have a stamp. Honda CR125R 1988 - 1991 Suzuki RM125 1989 - 1993 Part No. 05-RL01 (radhouse.co.uk)

    1 in stock 1-2 business days

    £44.29

  • Rubber Boot Boyesen RBK-8 Kit

    Boyesen Rubber Boot Boyesen RBK-8 Kit

    5 in stock 1-2 business days

    Boyesen Replacement Boot - RBK8 / RBK-8 - Replacement boot KIT for Boyesen Rad Valve. - With 2 clips. - Note. This boot must be fitted correct way around. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 32m / 36mm X Wide 25mm. Part No. 05-RB8.KIT (radhouse.co.uk) Suzuki RM80 1994 - 2001 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KX 80 1998-2000 KAWASAKI KX 80 1991-1997 KAWASAKI KX 100 1998-2000 KAWASAKI KX 100 1991-1997 SUZUKI RM 80 1994-1999

    5 in stock 1-2 business days

    £18.35

  • Rubber Boot Boyesen RB8

    Boyesen Rubber Boot Boyesen RB8

    Out of stock

    Boyesen Replacement Boot - RB8 / RB-8 - Replacement boot for Boyesen Rad Valve. - Note. This boot must be fitted correct way around. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 32m / 36mm X Wide 25mm. Part No. 05-RB8 (radhouse.co.uk) Suzuki RM80 1994 - 2001 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KX 80 1998-2000 KAWASAKI KX 80 1991-1997 KAWASAKI KX 100 1998-2000 KAWASAKI KX 100 1991-1997 SUZUKI RM 80 1994-1999

    Out of stock

    £14.83

  • Rubber Boot Boyesen RBK6 Kit RBK-6

    Boyesen Rubber Boot Boyesen RBK6 Kit RBK-6

    2 in stock 1-2 business days

    Boyesen Replacement Boot - RBK6 / RBK-6 - Replacement boot KIT for Boyesen Rad Valve. - With 2 Clips. - Note. This boot must be fitted correct way around. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 34m / 36mm X Wide 30mm. Part No. 05-RB6.KIT (radhouse.co.uk) Yamaha YZ80 1993 - 2000 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years YAMAHA YZ 80 1993-2001

    2 in stock 1-2 business days

    £21.29

  • Rubber Boot Boyesen RB6

    Boyesen Rubber Boot Boyesen RB6

    2 in stock 1-2 business days

    Boyesen Replacement Boot - RB6 / RB-6 - Replacement boot for Boyesen Rad Valve. - Note. This boot must be fitted correct way around. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 34m / 36mm X Wide 30mm. Part No. 05-RB6 (radhouse.co.uk) Yamaha YZ80 1993 - 2000 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years YAMAHA YZ 80 1993-2001

    2 in stock 1-2 business days

    £16.98

  • Rubber Boot Boyesen RBK-5 Kit RBK-5

    Boyesen Rubber Boot Boyesen RBK-5 Kit RBK-5

    2 in stock 1-2 business days

    Boyesen Replacement Boot - RBK5 / RBK-5 - Replacement boot KIT for Boyesen Rad Valve. - With 2 Clips - Note. This boot must be fitted correct way around. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 35m / 36mm X Wide 25mm. Part No. 05-RB5.KIT (radhouse.co.uk) Kawasaki KX100 1995 - 2018 Kawasaki KX80 1988 - 2000 Kawasaki KX80 Big Wheel 1988 - 1994 Kawasaki KX85 2001 - 2018 KTM 640 Supermoto 1999 - 2005 KTM 65 SX 1998 - 2018 Suzuki RM100 2003 Suzuki RM85 2002 - 2018 Suzuki RM85L 2003 - 2012 Yamaha YZ85 2002 - 2018 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years HUSQVARNA TC 85 2014-2017 HUSQVARNA TC 85 2018-2019 KAWASAKI KX 85 2001-2019 KTM SX 65 1998-2008 KTM SX 85 2018-2021 SUZUKI RM 100 2003-2005 KAWASAKI KX 100 2001-2019 SUZUKI RM 85 2002-2019 YAMAHA YZ 85 2002-2018 KTM XC 65 1998-2008 KTM EXC 65 1998-2008 KTM SX 85 2009-2017

    2 in stock 1-2 business days

    £20.50

  • Rubber Boot Boyesen RB5

    Boyesen Rubber Boot Boyesen RB5

    3 in stock 1-2 business days

    Boyesen Replacement Boot - RB5 / RB-5 - Replacement boot for Boyesen Rad Valve. - Note. This boot must be fitted correct way around. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 35m / 36mm X Wide 25mm. Part No. 05-RB5 (radhouse.co.uk) Kawasaki KX100 1995 - 2018 Kawasaki KX80 1988 - 2000 Kawasaki KX80 Big Wheel 1988 - 1994 Kawasaki KX85 2001 - 2018 KTM 640 Supermoto 1999 - 2005 KTM 65 SX 1998 - 2018 Suzuki RM100 2003 Suzuki RM85 2002 - 2018 Suzuki RM85L 2003 - 2012 Yamaha YZ85 2002 - 2018 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years HUSQVARNA TC 85 2014-2017 HUSQVARNA TC 85 2018-2019 KAWASAKI KX 85 2001-2019 KTM SX 65 1998-2008 KTM SX 85 2018-2021 SUZUKI RM 100 2003-2005 KAWASAKI KX 100 2001-2019 SUZUKI RM 85 2002-2019 YAMAHA YZ 85 2002-2018 KTM XC 65 1998-2008 KTM EXC 65 1998-2008 KTM SX 85 2009-2017

    3 in stock 1-2 business days

    £15.25

  • Rubber Boot Boyesen RBK-4 Kit RBK-4

    Boyesen Rubber Boot Boyesen RBK-4 Kit RBK-4

    2 in stock 1-2 business days

    Boyesen Replacement Boot KIT - RBK4 / RBK-4 - Replacement boot KIT for Boyesen Rad Valve. - With 2 Clips - Can be used as Univeral Carburetor boot. - Aprox Size. ID 40m / 46mm X Wide 28mm. Part No. 05-RB4.KIT (radhouse.co.uk) Honda CR125R 2000 - 2001 Kawasaki KX125 2001 Suzuki RM125 1989 - 1993 Yamaha YZ125 1989 - 1998 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years YAMAHA YZ 125 1995-1998

    2 in stock 1-2 business days

    £48.90

  • Rubber Boot Boyesen RB-4 RB-4

    Boyesen Rubber Boot Boyesen RB-4 RB-4

    3 in stock 1-2 business days

    Boyesen Replacement Boot - RB4 / RB-4 - Replacement boot for Boyesen Rad Valve. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 40m / 46mm X Wide 28mm. Part No. 05-RB4 (radhouse.co.uk) Honda CR125R 2000 - 2001 Kawasaki KX125 2001 Suzuki RM125 1989 - 1993 Yamaha YZ125 1989 - 1998 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years YAMAHA YZ 125 1995-1998

    3 in stock 1-2 business days

    £15.48

  • Rubber Boot Boyesen RBK-3 Kit

    Boyesen Rubber Boot Boyesen RBK-3 Kit

    10 in stock 1-2 business days

    Boyesen Replacement Boot - RBK3 / RBK-3 - Replacement boot KIT for Boyesen Rad Valve. - With 2 Clips. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 42m / 46mm X Wide 28mm. OD. 56mm Part No. 05-RB3.KIT (radhouse.co.uk) Honda CR125R 1988 - 1999 Kawasaki KX125 1988 - 1991 Yamaha YZ125 1988 - 1992 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years HONDA CR 125 1998-1999 HUSQVARNA CR 125 1995-1997 HONDA CR 125 2001 HONDA CR 125 2000 HONDA CR 125 1988-1991 HONDA CR 125 1992-1997

    10 in stock 1-2 business days

    £34.42

  • Rubber Boot Boyesen RB3

    Boyesen Rubber Boot Boyesen RB3

    2 in stock 1-2 business days

    Boyesen Replacement Boot - RB3 / RB-3 - Replacement boot for Boyesen Rad Valve. - Can be used as Univeral Carburetor boot. - Aprox Size. ID 42m / 46mm X Wide 28mm. OD. 56mm Part No. 05-RB3 (radhouse.co.uk) Honda CR125R 1988 - 1999 Kawasaki KX125 1988 - 1991 Yamaha YZ125 1988 - 1992 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years HONDA CR 125 1998-1999 HUSQVARNA CR 125 1995-1997 HONDA CR 125 2001 HONDA CR 125 2000 HONDA CR 125 1988-1991 HONDA CR 125 1992-1997

    2 in stock 1-2 business days

    £15.86

  • Rubber Boot Boyesen RBK-26 Kit Rubber Boot Boyesen RBK-26 Kit

    Boyesen Rubber Boot Boyesen RBK-26 Kit

    2 in stock 1-2 business days

    Boyesen Replacement Boot - RBK-26 / RBK26 Honda CR125R 2002 - 2003 Honda CR250R 2001 - 2004 Husqvarna WR250 1991 Kawasaki KX125 2002 - 2005 Kawasaki KX250 2003 Suzuki RM250 1990 - 1995 Yamaha WR250 1991 - 1995 Yamaha YZ125 1999 Yamaha YZ250 1989 - 1995 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KTM XC 300 2017-2019 KTM XC W 300 2017-2018 HUSQVARNA TE 250 2017-2018 HUSQVARNA TX 300 2017-2019 KTM EXC 300 2017-2018 HUSQVARNA TE 300 2017-2018 HUSQVARNA TC 250 2017-2019

    2 in stock 1-2 business days

    £33.36

  • Rubber Boot Boyesen RB26 Rubber Boot Boyesen RB26

    Boyesen Rubber Boot Boyesen RB26

    Out of stock

    Boyesen Replacement Boot - RB26 / RB-26 - Replacement boot for Boyesen Rad Valve. - Can be used as Univeral Carburetor boot. - Aprox Size. ID mm / mm X Wide mm. Part No. 05-RB26 (radhouse.co.uk) Honda CR125R 2002 - 2003 Honda CR250R 2001 - 2004 Husqvarna WR250 1991 Kawasaki KX125 2002 - 2005 Kawasaki KX250 2003 Suzuki RM250 1990 - 1995 Yamaha WR250 1991 - 1995 Yamaha YZ125 1999 Yamaha YZ250 1989 - 1995 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KTM XC 300 2017-2019 KTM XC W 300 2017-2018 HUSQVARNA TE 250 2017-2018 HUSQVARNA TX 300 2017-2019 KTM EXC 300 2017-2018 HUSQVARNA TE 300 2017-2018 HUSQVARNA TC 250 2017-2019

    Out of stock

    £16.10

  • Rubber Boot Boyesen RBK-2 Kit

    Boyesen Rubber Boot Boyesen RBK-2 Kit

    3 in stock 1-2 business days

    Boyesen Replacement Boot - RBK2 / RBK-2 - Replacement boot KIT for Boyesen Rad Valve. - Can be used as Univeral Carburetor boot. - Aprox Size. ID mm / mm X Wide mm. Part No. 05-RB2.KIT (radhouse.co.uk) Honda CR125R 2002 - 2003 Honda CR250R 2001 - 2004 Husqvarna WR250 1991 Kawasaki KX125 2002 - 2005 Kawasaki KX250 2003 Suzuki RM250 1990 - 1995 Yamaha WR250 1991 - 1995 Yamaha YZ125 1999 Yamaha YZ250 1989 - 1995 Vehicle Compatibility Please check the exact model and year before ordering. Manufacturer Model Years KAWASAKI KX 125 2003 HONDA CR 125 2003 KAWASAKI KX 125 2004-2006 YAMAHA YZ 250 1997-1998 YAMAHA YZ 125 2000 HONDA CR 125 2002 KAWASAKI KX 125 2002 YAMAHA YZ 125 2001 YAMAHA YZ 125 1999

    3 in stock 1-2 business days

    £34.13

Shop Boyesen reed valves and intake-related components for motocross and motorcycle engines.

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