In Stock
REAR SPROCKET STEEL JTR251.49SC, LIGHTWEIGHT SELF-CLEANING, SR251-49
£23.02
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UK delivery £4.99, free over £60 2–4 business days
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Only 4 leftThe next standard in MX durability and efficiency: a unique self-cleaning profile keeps the contact patch clear while trimming weight. Heat-induction hardened C45 steel lasts up to six times longer than 7075 aluminium, protecting your chain and your lap times. Features a unique self-cleaning design that keeps the contact area clear, significantly reduced weight versus conventional steel rears, heat-induction hardened C45 steel construction, and optimized tooth geometry for smooth, efficient drive. Lasts up to 6x longer than a 7075-aluminium sprocket and greatly extends chain life by minimizing abrasive buildup. Specifications: Material: Heat-induction hardened C45 steel, Tooth count: 49, Drive chain pitch: 520, Colour: Black.
Specifications
- SKU
- SR245-49.JT.S.SC
- Brand
- JT
- Availability
- In Stock (4)
Fitments (409)
| Make | Model | Year |
|---|---|---|
| FANTIC | XE 125 | 2021 |
| FANTIC | XE 125 | 2022 |
| FANTIC | XE 125 | 2023 |
| FANTIC | XE 125 | 2024 |
| FANTIC | XE 300 | 2024 |
| FANTIC | XEF 250 | 2021 |
| FANTIC | XEF 250 | 2022 |
| FANTIC | XEF 250 | 2023 |
| FANTIC | XEF 250 | 2024 |
| FANTIC | XEF 310 | 2024 |
| FANTIC | XEF 450 | 2022 |
| FANTIC | XEF 450 | 2023 |
| FANTIC | XEF 450 | 2024 |
| FANTIC | XX 125 | 2021 |
| FANTIC | XX 125 | 2022 |
| FANTIC | XX 125 | 2023 |
| FANTIC | XX 125 | 2024 |
| FANTIC | XX 125 | 2025 |
| FANTIC | XX 250 | 2022 |
| FANTIC | XX 250 | 2023 |
| FANTIC | XX 250 | 2024 |
| FANTIC | XX 250 | 2025 |
| FANTIC | XXF 250 | 2022 |
| FANTIC | XXF 250 | 2023 |
| FANTIC | XXF 250 | 2024 |
| FANTIC | XXF 450 | 2022 |
| FANTIC | XXF 450 | 2023 |
| FANTIC | XXF 450 | 2024 |
| HONDA | XL 250 | 1982 |
| HONDA | XL 250 | 1983 |
| HONDA | XL 250 | 1984 |
| HONDA | XL 250 | 1985 |
| HONDA | XL 250 | 1986 |
| HONDA | XL 250 | 1987 |
| HONDA | XL 500 | 1979 |
| HONDA | XL 500 | 1980 |
| HONDA | XL 500 | 1981 |
| HONDA | XL 500 | 1982 |
| HONDA | XL 500 | 1983 |
| HONDA | XL 500 | 1984 |
| HONDA | XL 600 | 1984 |
| HONDA | XL 600 | 1985 |
| HONDA | XL 600 | 1986 |
| HONDA | XL 600 | 1987 |
| HONDA | XL 600 | 1988 |
| HONDA | XL 600 | 1989 |
| HONDA | XL 600 | 1990 |
| HONDA | XL 600 | 1991 |
| HONDA | XL 600 | 1992 |
| HONDA | XL 600 | 1993 |
| HONDA | XL 600 | 1994 |
| HONDA | XL R 500 | 1982 |
| HONDA | XL R 500 | 1983 |
| HONDA | XL R 500 | 1984 |
| HONDA | XL R 500 | 1985 |
| HONDA | XL R 500 | 1986 |
| HONDA | XL R 500 | 1987 |
| HONDA | XL R 600 | 1983 |
| HONDA | XL R 600 | 1984 |
| HONDA | XL R 600 | 1985 |
| HONDA | XL R 600 | 1986 |
| HONDA | XL R 600 | 1987 |
| HONDA | XL R 600 | 1988 |
| HONDA | XL S 500 | 1979 |
| HONDA | XL S 500 | 1980 |
| HONDA | XL S 500 | 1981 |
| HONDA | XR 200R | 1984 |
| HONDA | XR 200R | 1985 |
| HONDA | XR 200R | 1986 |
| HONDA | XR 200R | 1987 |
| HONDA | XR 200R | 1988 |
| HONDA | XR 200R | 1989 |
| HONDA | XR 200R | 1990 |
| HONDA | XR 200R | 1991 |
| HONDA | XR 200R | 1992 |
| HONDA | XR 200R | 1993 |
| HONDA | XR 200R | 1994 |
| HONDA | XR 200R | 1995 |
| HONDA | XR 200R | 1996 |
| HONDA | XR 200R | 1997 |
| HONDA | XR 200R | 1998 |
| HONDA | XR 200R | 1999 |
| HONDA | XR 200R | 2000 |
| HONDA | XR 200R | 2001 |
| HONDA | XR 200R | 2002 |
| HONDA | XR 250 | 1979 |
| HONDA | XR 250 | 1980 |
| HONDA | XR 250 | 1981 |
| HONDA | XR 250 | 1982 |
| HONDA | XR 250 | 1983 |
| HONDA | XR 250R | 1986 |
| HONDA | XR 250R | 1987 |
| HONDA | XR 250R | 1988 |
| HONDA | XR 250R | 1989 |
| HONDA | XR 350R | 1983 |
| HONDA | XR 350R | 1984 |
| HONDA | XR 350R | 1985 |
| HONDA | XR 350R | 1986 |
| HONDA | XR 350R | 1987 |
| HONDA | XR 500R | 1981 |
| HONDA | XR 500R | 1982 |
| HONDA | XR 500R | 1983 |
| HONDA | XR 500R | 1984 |
| HONDA | XR 500R | 1985 |
| HONDA | XR 600R | 1983 |
| HONDA | XR 600R | 1984 |
| HONDA | XR 600R | 1985 |
| HONDA | XR 600R | 1986 |
| HONDA | XR 600R | 1987 |
| HONDA | XR 600R | 1988 |
| HONDA | XR 600R | 1989 |
| HONDA | XR 600R | 1990 |
| YAMAHA | TT-R 230 | 2005 |
| YAMAHA | TT-R 230 | 2006 |
| YAMAHA | TT-R 230 | 2007 |
| YAMAHA | TT-R 230 | 2008 |
| YAMAHA | TT-R 230 | 2009 |
| YAMAHA | TT-R 230 | 2010 |
| YAMAHA | TT-R 230 | 2011 |
| YAMAHA | TT-R 230 | 2012 |
| YAMAHA | TT-R 230 | 2013 |
| YAMAHA | TT-R 230 | 2014 |
| YAMAHA | TT-R 230 | 2015 |
| YAMAHA | TT-R 230 | 2016 |
| YAMAHA | TT-R 230 | 2017 |
| YAMAHA | TT-R 230 | 2018 |
| YAMAHA | TT-R 230 | 2019 |
| YAMAHA | TT-R 230 | 2020 |
| YAMAHA | TTR 230 | 2021 |
| YAMAHA | TTR 230 | 2022 |
| YAMAHA | TTR 230 | 2023 |
| YAMAHA | TTR 230 | 2024 |
| YAMAHA | TTR 230 | 2025 |
| YAMAHA | WR 250 | 2000 |
| YAMAHA | WR 250 | 2001 |
| YAMAHA | WR 250 | 2002 |
| YAMAHA | WR 250 | 2003 |
| YAMAHA | WR 250 | 2004 |
| YAMAHA | WR 250 | 2005 |
| YAMAHA | WR 250 | 2006 |
| YAMAHA | WR 250F | 2001 |
| YAMAHA | WR 250F | 2002 |
| YAMAHA | WR 250F | 2003 |
| YAMAHA | WR 250F | 2004 |
| YAMAHA | WR 250F | 2005 |
| YAMAHA | WR 250F | 2006 |
| YAMAHA | WR 250F | 2007 |
| YAMAHA | WR 250F | 2008 |
| YAMAHA | WR 250F | 2009 |
| YAMAHA | WR 250F | 2010 |
| YAMAHA | WR 250F | 2011 |
| YAMAHA | WR 250F | 2012 |
| YAMAHA | WR 250F | 2013 |
| YAMAHA | WR 250F | 2014 |
| YAMAHA | WR 250F | 2015 |
| YAMAHA | WR 250F | 2016 |
| YAMAHA | WR 250F | 2017 |
| YAMAHA | WR 250F | 2018 |
| YAMAHA | WR 250F | 2019 |
| YAMAHA | WR 250F | 2020 |
| YAMAHA | WR 250F | 2021 |
| YAMAHA | WR 250F | 2022 |
| YAMAHA | WR 250F | 2023 |
| YAMAHA | WR 250F | 2024 |
| YAMAHA | WR 250F | 2025 |
| YAMAHA | WR 400F | 1998 |
| YAMAHA | WR 400F | 1999 |
| YAMAHA | WR 400F | 2000 |
| YAMAHA | WR 400F | 2001 |
| YAMAHA | WR 400F | 2002 |
| YAMAHA | WR 426F | 1999 |
| YAMAHA | WR 426F | 2000 |
| YAMAHA | WR 426F | 2001 |
| YAMAHA | WR 426F | 2002 |
| YAMAHA | WR 450F | 2003 |
| YAMAHA | WR 450F | 2004 |
| YAMAHA | WR 450F | 2005 |
| YAMAHA | WR 450F | 2006 |
| YAMAHA | WR 450F | 2007 |
| YAMAHA | WR 450F | 2008 |
| YAMAHA | WR 450F | 2009 |
| YAMAHA | WR 450F | 2010 |
| YAMAHA | WR 450F | 2011 |
| YAMAHA | WR 450F | 2012 |
| YAMAHA | WR 450F | 2013 |
| YAMAHA | WR 450F | 2014 |
| YAMAHA | WR 450F | 2015 |
| YAMAHA | WR 450F | 2016 |
| YAMAHA | WR 450F | 2017 |
| YAMAHA | WR 450F | 2018 |
| YAMAHA | WR 450F | 2019 |
| YAMAHA | WR 450F | 2020 |
| YAMAHA | WR 450F | 2021 |
| YAMAHA | WR 450F | 2022 |
| YAMAHA | WR 450F | 2023 |
| YAMAHA | WR 450F | 2024 |
| YAMAHA | WR 450F | 2025 |
| YAMAHA | WR R 250 | 2008 |
| YAMAHA | WR R 250 | 2009 |
| YAMAHA | WR R 250 | 2010 |
| YAMAHA | WR R 250 | 2011 |
| YAMAHA | WR R 250 | 2012 |
| YAMAHA | WR R 250 | 2013 |
| YAMAHA | WR R 250 | 2014 |
| YAMAHA | WR R 250 | 2015 |
| YAMAHA | WR R 250 | 2016 |
| YAMAHA | WR R 250 | 2017 |
| YAMAHA | WR R 250 | 2018 |
| YAMAHA | WR R 250 | 2019 |
| YAMAHA | WR R 250 | 2020 |
| YAMAHA | WR X 250 | 2008 |
| YAMAHA | WR X 250 | 2009 |
| YAMAHA | WR X 250 | 2010 |
| YAMAHA | WR X 250 | 2011 |
| YAMAHA | YZ 125 | 1999 |
| YAMAHA | YZ 125 | 2000 |
| YAMAHA | YZ 125 | 2001 |
| YAMAHA | YZ 125 | 2002 |
| YAMAHA | YZ 125 | 2003 |
| YAMAHA | YZ 125 | 2004 |
| YAMAHA | YZ 125 | 2005 |
| YAMAHA | YZ 125 | 2006 |
| YAMAHA | YZ 125 | 2007 |
| YAMAHA | YZ 125 | 2008 |
| YAMAHA | YZ 125 | 2009 |
| YAMAHA | YZ 125 | 2010 |
| YAMAHA | YZ 125 | 2011 |
| YAMAHA | YZ 125 | 2012 |
| YAMAHA | YZ 125 | 2013 |
| YAMAHA | YZ 125 | 2014 |
| YAMAHA | YZ 125 | 2015 |
| YAMAHA | YZ 125 | 2016 |
| YAMAHA | YZ 125 | 2017 |
| YAMAHA | YZ 125 | 2018 |
| YAMAHA | YZ 125 | 2019 |
| YAMAHA | YZ 125 | 2020 |
| YAMAHA | YZ 125 | 2021 |
| YAMAHA | YZ 125 | 2022 |
| YAMAHA | YZ 125 | 2023 |
| YAMAHA | YZ 125 | 2024 |
| YAMAHA | YZ 125 | 2025 |
| YAMAHA | YZ 125X | 2020 |
| YAMAHA | YZ 125X | 2021 |
| YAMAHA | YZ 125X | 2022 |
| YAMAHA | YZ 125X | 2023 |
| YAMAHA | YZ 125X | 2024 |
| YAMAHA | YZ 125X | 2025 |
| YAMAHA | YZ 250 | 1977 |
| YAMAHA | YZ 250 | 1978 |
| YAMAHA | YZ 250 | 1979 |
| YAMAHA | YZ 250 | 1980 |
| YAMAHA | YZ 250 | 1981 |
| YAMAHA | YZ 250 | 1982 |
| YAMAHA | YZ 250 | 1983 |
| YAMAHA | YZ 250 | 1984 |
| YAMAHA | YZ 250 | 1985 |
| YAMAHA | YZ 250 | 1986 |
| YAMAHA | YZ 250 | 1987 |
| YAMAHA | YZ 250 | 1988 |
| YAMAHA | YZ 250 | 1989 |
| YAMAHA | YZ 250 | 1990 |
| YAMAHA | YZ 250 | 1991 |
| YAMAHA | YZ 250 | 1992 |
| YAMAHA | YZ 250 | 1993 |
| YAMAHA | YZ 250 | 1994 |
| YAMAHA | YZ 250 | 1995 |
| YAMAHA | YZ 250 | 1996 |
| YAMAHA | YZ 250 | 1997 |
| YAMAHA | YZ 250 | 1998 |
| YAMAHA | YZ 250 | 1999 |
| YAMAHA | YZ 250 | 2000 |
| YAMAHA | YZ 250 | 2001 |
| YAMAHA | YZ 250 | 2002 |
| YAMAHA | YZ 250 | 2003 |
| YAMAHA | YZ 250 | 2004 |
| YAMAHA | YZ 250 | 2005 |
| YAMAHA | YZ 250 | 2006 |
| YAMAHA | YZ 250 | 2007 |
| YAMAHA | YZ 250 | 2008 |
| YAMAHA | YZ 250 | 2009 |
| YAMAHA | YZ 250 | 2010 |
| YAMAHA | YZ 250 | 2011 |
| YAMAHA | YZ 250 | 2012 |
| YAMAHA | YZ 250 | 2013 |
| YAMAHA | YZ 250 | 2014 |
| YAMAHA | YZ 250 | 2015 |
| YAMAHA | YZ 250 | 2016 |
| YAMAHA | YZ 250 | 2017 |
| YAMAHA | YZ 250 | 2018 |
| YAMAHA | YZ 250 | 2019 |
| YAMAHA | YZ 250 | 2020 |
| YAMAHA | YZ 250 | 2021 |
| YAMAHA | YZ 250 | 2022 |
| YAMAHA | YZ 250 | 2023 |
| YAMAHA | YZ 250 | 2024 |
| YAMAHA | YZ 250 | 2025 |
| YAMAHA | YZ 250F | 2001 |
| YAMAHA | YZ 250F | 2002 |
| YAMAHA | YZ 250F | 2003 |
| YAMAHA | YZ 250F | 2004 |
| YAMAHA | YZ 250F | 2005 |
| YAMAHA | YZ 250F | 2006 |
| YAMAHA | YZ 250F | 2007 |
| YAMAHA | YZ 250F | 2008 |
| YAMAHA | YZ 250F | 2009 |
| YAMAHA | YZ 250F | 2010 |
| YAMAHA | YZ 250F | 2011 |
| YAMAHA | YZ 250F | 2012 |
| YAMAHA | YZ 250F | 2013 |
| YAMAHA | YZ 250F | 2014 |
| YAMAHA | YZ 250F | 2015 |
| YAMAHA | YZ 250F | 2016 |
| YAMAHA | YZ 250F | 2017 |
| YAMAHA | YZ 250F | 2018 |
| YAMAHA | YZ 250F | 2019 |
| YAMAHA | YZ 250F | 2020 |
| YAMAHA | YZ 250F | 2021 |
| YAMAHA | YZ 250F | 2022 |
| YAMAHA | YZ 250F | 2023 |
| YAMAHA | YZ 250F | 2024 |
| YAMAHA | YZ 250F | 2025 |
| YAMAHA | YZ 250FX | 2015 |
| YAMAHA | YZ 250FX | 2016 |
| YAMAHA | YZ 250FX | 2017 |
| YAMAHA | YZ 250FX | 2018 |
| YAMAHA | YZ 250FX | 2019 |
| YAMAHA | YZ 250FX | 2020 |
| YAMAHA | YZ 250FX | 2021 |
| YAMAHA | YZ 250FX | 2022 |
| YAMAHA | YZ 250FX | 2023 |
| YAMAHA | YZ 250FX | 2024 |
| YAMAHA | YZ 250FX | 2025 |
| YAMAHA | YZ 250X | 2016 |
| YAMAHA | YZ 250X | 2017 |
| YAMAHA | YZ 250X | 2018 |
| YAMAHA | YZ 250X | 2019 |
| YAMAHA | YZ 250X | 2020 |
| YAMAHA | YZ 250X | 2021 |
| YAMAHA | YZ 250X | 2022 |
| YAMAHA | YZ 250X | 2023 |
| YAMAHA | YZ 250X | 2024 |
| YAMAHA | YZ 250X | 2025 |
| YAMAHA | YZ 400 | 1977 |
| YAMAHA | YZ 400 | 1978 |
| YAMAHA | YZ 400 | 1979 |
| YAMAHA | YZ 400 | 1980 |
| YAMAHA | YZ 400 | 1981 |
| YAMAHA | YZ 400 | 1982 |
| YAMAHA | YZ 400 | 1983 |
| YAMAHA | YZ 400 | 1984 |
| YAMAHA | YZ 400 | 1985 |
| YAMAHA | YZ 400 | 1986 |
| YAMAHA | YZ 400 | 1987 |
| YAMAHA | YZ 400 | 1988 |
| YAMAHA | YZ 400 | 1989 |
| YAMAHA | YZ 400 | 1990 |
| YAMAHA | YZ 400 | 1991 |
| YAMAHA | YZ 400 | 1992 |
| YAMAHA | YZ 400 | 1993 |
| YAMAHA | YZ 400 | 1994 |
| YAMAHA | YZ 400 | 1995 |
| YAMAHA | YZ 400 | 1996 |
| YAMAHA | YZ 400 | 1997 |
| YAMAHA | YZ 400 | 1998 |
| YAMAHA | YZ 400 | 1999 |
| YAMAHA | YZ 400 | 2000 |
| YAMAHA | YZ 400 | 2001 |
| YAMAHA | YZ 400 | 2002 |
| YAMAHA | YZ 400F | 1998 |
| YAMAHA | YZ 400F | 1999 |
| YAMAHA | YZ 426 | 2000 |
| YAMAHA | YZ 426 | 2001 |
| YAMAHA | YZ 426 | 2002 |
| YAMAHA | YZ 426F | 2000 |
| YAMAHA | YZ 426F | 2001 |
| YAMAHA | YZ 426F | 2002 |
| YAMAHA | YZ 450F | 2003 |
| YAMAHA | YZ 450F | 2004 |
| YAMAHA | YZ 450F | 2005 |
| YAMAHA | YZ 450F | 2006 |
| YAMAHA | YZ 450F | 2007 |
| YAMAHA | YZ 450F | 2008 |
| YAMAHA | YZ 450F | 2009 |
| YAMAHA | YZ 450F | 2010 |
| YAMAHA | YZ 450F | 2011 |
| YAMAHA | YZ 450F | 2012 |
| YAMAHA | YZ 450F | 2013 |
| YAMAHA | YZ 450F | 2014 |
| YAMAHA | YZ 450F | 2015 |
| YAMAHA | YZ 450F | 2016 |
| YAMAHA | YZ 450F | 2017 |
| YAMAHA | YZ 450F | 2018 |
| YAMAHA | YZ 450F | 2019 |
| YAMAHA | YZ 450F | 2020 |
| YAMAHA | YZ 450F | 2021 |
| YAMAHA | YZ 450F | 2022 |
| YAMAHA | YZ 450F | 2023 |
| YAMAHA | YZ 450F | 2024 |
| YAMAHA | YZ 450F | 2025 |
| YAMAHA | YZ 450FX | 2016 |
| YAMAHA | YZ 450FX | 2017 |
| YAMAHA | YZ 450FX | 2018 |
| YAMAHA | YZ 450FX | 2019 |
| YAMAHA | YZ 450FX | 2020 |
| YAMAHA | YZ 450FX | 2021 |
| YAMAHA | YZ 450FX | 2022 |
| YAMAHA | YZ 450FX | 2023 |
| YAMAHA | YZ 450FX | 2024 |
| YAMAHA | YZ 450FX | 2025 |
- General Product Group
- Chain & Sprockets
- General Product Type
- Sprockets & Components (Rear)
- Variant Id
- 291321
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details
FULL DESCRIPTION
JT Rear Sprocket - Lightweight Self-Cleaning Steel
Experience the next standard in motorcycle durability and efficiency with this lightweight, self-cleaning steel rear sprocket. Designed to enhance performance and longevity, it offers superior resistance to wear compared to traditional aluminum sprockets.
Key Features:
- Unique self-cleaning design maintains optimal chain contact by clearing debris.
- Significantly reduced weight compared to conventional steel rear sprockets.
- Constructed from heat-induction hardened C45 steel for exceptional durability.
- Offers up to 6 times longer lifespan than sprockets made from 7075 aluminum.
- Extends chain life by minimizing abrasive buildup and wear.
- Optimized tooth geometry ensures smooth and efficient power delivery.
Specifications:
- Material: Heat-induction hardened C45 steel
- Tooth Count: 49
- Drive Chain Pitch: 520
- Color: Black
Before you buy
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.