REAR SPROCKET JTR1842.51 STEEL SR1842-51
4.1 Trustpilot 99.9% positive on eBay
UK delivery £4.99, free over £60 2–4 business days
Spread the cost with 
18+, T&Cs apply
JT Steel Rear Sprocket JTR1842.51. Made from premium C49 high-carbon steel for long wear. Features OEM-level precision and durability with 2,500+ fitments. Offers long life, exact fit, and dependable power transfer. Specifications: Material C49 high-carbon steel, Tooth count 51, Drive chain pitch 428, Colour Black.
- SKU
- SR842-51.S.JT
- Brand
- JT
- Availability
- In Stock (1)
Fitments (41)
| Make | Model | Year |
|---|---|---|
| YAMAHA | DT F 125 | 1975 |
| YAMAHA | DT MX 175 | 1980 |
| YAMAHA | DT MX 175 | 1981 |
| YAMAHA | DT MX 175 | 1982 |
| YAMAHA | DT MX 175 | 1983 |
| YAMAHA | DT MX 175 | 1984 |
| YAMAHA | DT MX 175 | 1985 |
| YAMAHA | XT 350 | 1985 |
| YAMAHA | XT 350 | 1986 |
| YAMAHA | XT 350 | 1987 |
| YAMAHA | XT 350 | 1988 |
| YAMAHA | XT 350 | 1989 |
| YAMAHA | XT 350 | 1990 |
| YAMAHA | XT 350 | 1991 |
| YAMAHA | XT 350 | 1992 |
| YAMAHA | XT 350 | 1993 |
| YAMAHA | XT 350 | 1994 |
| YAMAHA | YZ 80 | 1978 |
| YAMAHA | YZ 80 | 1979 |
| YAMAHA | YZ 80 | 1980 |
| YAMAHA | YZ 80 | 1981 |
| YAMAHA | YZ 80 | 1982 |
| YAMAHA | YZ 80 | 1983 |
| YAMAHA | YZ 80 | 1984 |
| YAMAHA | YZ 80 | 1985 |
| YAMAHA | YZ 80 | 1986 |
| YAMAHA | YZ 80 | 1987 |
| YAMAHA | YZ 80 | 1988 |
| YAMAHA | YZ 80 | 1989 |
| YAMAHA | YZ 80 | 1990 |
| YAMAHA | YZ 80 | 1991 |
| YAMAHA | YZ 80 | 1992 |
| YAMAHA | YZ 80 | 1993 |
| YAMAHA | YZ 80 | 1994 |
| YAMAHA | YZ 80 | 1995 |
| YAMAHA | YZ 80 | 1996 |
| YAMAHA | YZ 80 | 1997 |
| YAMAHA | YZ 80 | 1998 |
| YAMAHA | YZ 80 | 1999 |
| YAMAHA | YZ 80 | 2000 |
| YAMAHA | YZ 80 | 2001 |
- General Product Group
- Chain & Sprockets
- General Product Type
- Sprockets & Components (Rear)
- Variant Id
- 279177
FULL DESCRIPTION
JT Steel Rear Sprocket JTR1842.51
Experience enduring performance with the JT Steel Rear Sprocket, engineered for longevity and precision. Crafted from premium C49 high-carbon steel, this sprocket offers exceptional wear resistance, ensuring dependable power transfer for mile after mile.
Key Features:
- Constructed from durable C49 high-carbon steel for extended wear life.
- Manufactured with precision for an exact fit, meeting OEM standards.
- Designed for consistent power transfer and accurate sprocket tooth profiles.
- Engineered for reliability across street, track, and off-road riding conditions.
Specifications:
- Material: C49 High-Carbon Steel
- Tooth Count: 51
- Drive Chain Pitch: 428
- Color: Black
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.