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The Boyesen RB-1 Motorcycle Rad Valve Boot is designed to provide a reliable connection between the reed valve assembly and intake system on select Beta two-stroke motorcycles. This replacement boot supports proper intake sealing and helps maintain consistent airflow to the engine, making it a practical choice for maintenance, repair, or restoration applications.
Manufactured by Boyesen, the RB-1 is made for fitment on specific Beta 250 RR, Beta 300 RR, and Beta 300 Xtrainer models. Its application-specific design helps ensure compatibility with the original intake configuration when servicing the motorcycle. The boot is suitable for riders, technicians, and powersports professionals seeking a dependable replacement component from an established performance parts manufacturer.
Fitment includes the 2015–2017 Beta 300 Xtrainer, 2013–2017 Beta 250 RR (2T), and 2013–2014 Beta 300 RR (2T). Confirm the motorcycle model and year before ordering to ensure proper application. The manufacturer part number is RB-1, and the vendor part number is 59-7801.
Features:
- Application: Replacement motorcycle rad valve boot for select Beta two-stroke models
- Brand: Boyesen
- Manufacturer Part Number: RB-1
- Vendor Part Number: 59-7801
- Fitment: 2015–2017 Beta 300 Xtrainer
- Fitment: 2013–2017 Beta 250 RR (2T)
- Fitment: 2013–2014 Beta 300 RR (2T)
- Function: Helps provide a secure intake connection and proper sealing around the reed valve assembly
Fitment:
1985 Honda CR500R
1986 Honda CR500R
1987 Honda CR500R
1987 Kawasaki KX250
1987 Kawasaki KX500
1987 Suzuki RM250
1988 Honda CR500R
1988 Kawasaki KX250
1988 Kawasaki KX500
1988 Suzuki RM250
1989 Honda CR500R
1989 Kawasaki KX250
1989 Kawasaki KX500
1989 Suzuki RMX250
1990 Kawasaki KX250
1990 Kawasaki KX500
1990 KTM 300 EXC
1990 KTM 300 MXC
1990 Suzuki RMX250
1991 Kawasaki KDX 250
1991 Kawasaki KX250
1991 Kawasaki KX500
1991 KTM 300 EXC
1991 KTM 300 MXC
1991 Suzuki RMX250
1992 Kawasaki KDX 250
1992 Kawasaki KX125
1992 Kawasaki KX250
1992 Kawasaki KX500
1992 KTM 300 EXC
1992 KTM 300 MXC
1992 KTM 300 SX
1992 Suzuki RMX250
1993 Kawasaki KDX 250
1993 Kawasaki KX125
1993 Kawasaki KX250
1993 Kawasaki KX500
1993 KTM 300 EXC
1993 KTM 300 MXC
1993 KTM 300 SX
1994 Kawasaki KDX 250
1994 Kawasaki KX125
1994 Kawasaki KX250
1994 Kawasaki KX500
1994 KTM 300 EXC
1994 KTM 300 MXC
1994 KTM 300 SX
1994 KTM 440 Exc
1994 KTM 440 Mxc
1994 KTM 440 Sx
1994 KTM 550 Mxc
1995 Kawasaki KX250
1995 Kawasaki KX500
1995 KTM 250 EXC
1995 KTM 250 SX
1995 KTM 300 EXC
1995 KTM 300 MXC
1995 KTM 300 SX
1995 KTM 440 Exc
1995 KTM 440 Mxc
1995 KTM 550 Mxc
1995 Yamaha YZ250
1996 Kawasaki KX250
1996 Kawasaki KX500
1996 KTM 250 EXC
1996 KTM 250 MXC
1996 KTM 250 SX
1996 KTM 300 EXC
1996 KTM 300 MXC
1996 KTM 300 SX
1996 KTM 360 Exc
1996 KTM 360 Mxc
1996 KTM 360 Sx
1996 Suzuki RM250
1996 Yamaha YZ250
1997 Kawasaki KX250
1997 Kawasaki KX500
1997 KTM 250 EXC
1997 KTM 250 MXC
1997 KTM 250 SX
1997 KTM 300 EXC
1997 KTM 300 MXC
1997 KTM 360 Exc
1997 KTM 360 Mxc
1997 KTM 360 Sx
1997 Suzuki RM250
1997 Yamaha YZ250
1998 Kawasaki KX125
1998 Kawasaki KX250
1998 Kawasaki KX500
1998 KTM 125 Exc
1998 KTM 125 SX
1998 KTM 200 Exc
1998 KTM 300 EXC
1998 KTM 300 MXC
1998 KTM 380 Exc
1998 KTM 380 Mxc
1998 KTM 380 Sx
1998 Suzuki RM125
1998 Suzuki RM250
1998 Yamaha YZ250
1999 Kawasaki KX125
1999 Kawasaki KX250
1999 Kawasaki KX500
1999 KTM 125 Exc
1999 KTM 125 SX
1999 KTM 200 Exc
1999 KTM 300 EXC
1999 KTM 300 MXC
1999 KTM 380 Exc
1999 KTM 380 Mxc
1999 KTM 380 Sx
1999 Suzuki RM250
2000 Kawasaki KX250
2000 Kawasaki KX500
2000 KTM 125 Exc
2000 KTM 125 SX
2000 KTM 200 Exc
2000 KTM 300 EXC
2000 KTM 300 MXC
2000 KTM 380 Exc
2000 KTM 380 Mxc
2000 KTM 380 Sx
2000 Suzuki RM250
2000 Yamaha YZ250
2001 Kawasaki KX250
2001 Kawasaki KX500
2001 KTM 125 Exc
2001 KTM 125 SX
2001 KTM 200 Exc
2001 KTM 300 EXC
2001 KTM 300 MXC
2001 KTM 380 Exc
2001 KTM 380 Mxc
2001 KTM 380 Sx
2001 Suzuki RM250
2001 Yamaha YZ250
2002 Kawasaki KX250
2002 Kawasaki KX500
2002 KTM 125 Exc
2002 KTM 125 SX
2002 KTM 200 Exc
2002 KTM 300 EXC
2002 KTM 300 MXC
2002 KTM 380 Exc
2002 KTM 380 Mxc
2002 KTM 380 Sx
2002 Suzuki RM250
2002 Yamaha YZ250
2003 Kawasaki KX250
2003 Kawasaki KX500
2003 KTM 125 Exc
2003 KTM 125 SX
2003 KTM 200 Exc
2003 KTM 200 Sx
2003 KTM 300 EXC
2003 KTM 300 MXC
2003 Suzuki RM250
2003 Yamaha YZ250
2004 Honda CR125R
2004 Kawasaki KX250
2004 Kawasaki KX500
2004 KTM 125 Exc
2004 KTM 125 SX
2004 KTM 150 SX
2004 KTM 200 Exc
2004 KTM 200 Sx
2004 Suzuki RM250
2004 Yamaha YZ250
2005 KTM 125 Exc
2005 KTM 125 SX
2005 KTM 150 SX
2005 KTM 200 Exc
2005 Suzuki RM250
2005 Yamaha YZ250
2006 KTM 125 Exc
2006 KTM 125 SX
2006 KTM 150 SX
2006 KTM 200 Xc
2006 Suzuki RM250
2006 Yamaha YZ250
2007 KTM 125 Exc
2007 KTM 125 SX
2007 KTM 144 Sx
2007 KTM 150 SX
2007 KTM 250 XC
2007 Suzuki RM250
2007 Yamaha YZ250
2008 KTM 125 Exc
2008 KTM 125 SX
2008 KTM 144 Sx
2008 KTM 150 SX
2008 KTM 150 XC
2008 KTM 250 EXC
2008 KTM 250 XC
2008 Suzuki RM250
2008 Yamaha YZ250
2009 KTM 125 Exc
2009 KTM 125 SX
2009 KTM 150 SX
2009 KTM 150 XC
2009 KTM 250 XC
2009 Yamaha YZ250
2010 KTM 125 SX
2010 KTM 150 SX
2010 KTM 150 XC
2010 KTM 250 XC
2010 Yamaha YZ250
2011 KTM 125 SX
2011 KTM 150 SX
2011 KTM 150 XC
2011 KTM 250 XC
2011 Yamaha YZ250
2012 KTM 125 SX
2012 KTM 150 SX
2012 KTM 150 XC
2012 KTM 250 XC
2012 Yamaha YZ250
2013 Beta 250 RR (2T)
2013 Beta 300 RR (2t)
2013 KTM 125 SX
2013 KTM 150 SX
2013 KTM 150 XC
2013 KTM 250 XC
2013 Yamaha YZ250
2014 Beta 250 RR (2T)
2014 Beta 300 RR (2t)
2014 Husqvarna TC 125
2014 Husqvarna TC 250
2014 Husqvarna TE 125
2014 Husqvarna TE 250
2014 Husqvarna TE 300
2014 KTM 125 SX
2014 KTM 150 SX
2014 KTM 150 XC
2014 KTM 250 XC
2014 Yamaha YZ250
2015 Beta 250 RR (2T)
2015 Beta 300 RR (2t)
2015 Beta 300 Xtrainer
2015 Husqvarna TC 125
2015 Husqvarna TC 250
2015 Husqvarna TE 125
2015 Husqvarna TE 250
2015 Husqvarna TE 300
2015 KTM 125 SX
2015 KTM 150 SX
2015 KTM 150 XC
2015 KTM 250 XC
2015 Yamaha YZ250
2016 Beta 250 RR (2T)
2016 Beta 300 RR (2t)
2016 Beta 300 Xtrainer
2016 Husqvarna TC 250
2016 Husqvarna TE 125
2016 Husqvarna TE 250
2016 Husqvarna TE 300
2016 KTM 250 XC
2016 Yamaha YZ250
2016 Yamaha YZ250X
2017 Beta 250 RR (2T)
2017 Beta 250 RR (RE)
2017 Beta 300 RR (2t)
2017 Beta 300 RR (RE)
2017 Beta 300 Xtrainer
2017 Yamaha YZ250
2017 Yamaha YZ250X
2018 Beta 250 RR (2T)
2018 Beta 250 RR (RE)
2018 Beta 300 RR (2t)
2018 Beta 300 RR (RE)
2018 Beta 300 Xtrainer
2018 Yamaha YZ250
2018 Yamaha YZ250X
2019 Beta 250 RR (2T)
2019 Beta 250 RR (RE)
2019 Beta 300 RR (2t)
2019 Beta 300 RR (RE)
2019 Beta 300 Xtrainer
2019 Yamaha YZ250
2019 Yamaha YZ250X
2020 Beta 250 RR (2T)
2020 Beta 250 RR (RE)
2020 Beta 300 RR (2t)
2020 Beta 300 RR (RE)
2020 Beta 300 Xtrainer
2020 Yamaha YZ250
2020 Yamaha YZ250X
2021 Beta 250 RR (2T)
2021 Beta 250 RR (RE)
2021 Beta 300 RR (2t)
2021 Beta 300 RR (RE)
2021 Beta 300 Xtrainer
2021 Yamaha YZ250
2021 Yamaha YZ250X
2022 Beta 250 RR (2T)
2022 Beta 250 RR (RE)
2022 Beta 300 RR (2t)
2022 Beta 300 RR (RE)
2022 Beta 300 Xtrainer
2022 Yamaha YZ250
2022 Yamaha YZ250X
2023 Beta 250 RR (2T)
2023 Beta 250 RR (RE)
2023 Beta 300 RR (2t)
2023 Beta 300 RR (RE)
2023 Yamaha YZ250
2023 Yamaha YZ250X
2024 Beta 250 RR (2T)
2024 Beta 300 RR (2t)
2024 Yamaha YZ250
2024 Yamaha YZ250X