JT Sprockets - Front - 17T-18T | Standard & RB | 525 (Steel)

Enhance your Triumph’s drivetrain performance with the JT Sprockets 17T RB Front Sprocket (525 pitch). Constructed from C49 high-carbon steel and engineered for strength, longevity, and precise power transfer, this sprocket is a reliable, cost-effective upgrade for classic Triumph models.

The RB (Rubber Cushioned) version integrates rubber dampers on both sides of the sprocket to reduce chain noise and vibration, helping extend the life of both sprocket and chain while improving ride comfort.

Key Technical Features:

C49 High-Carbon Steel Construction
Heat-treated and precision-machined for outstanding wear resistance and consistent performance.

Rubber Cushion (RB) Spec
Built-in rubber dampers reduce mechanical noise and vibration, enhancing riding comfort and extending component lifespan.

OEM-Compatible Fitment
Designed to fit directly without modification—ideal for maintenance or gearing adjustments.

Gear Ratio Note

• 17T: Standard size for Bonneville 800cc

• 18T: Standard size for Bonneville 865cc, Scrambler 865cc, and Thruxton 900cc
  Swapping tooth counts affects acceleration and cruising RPM—17T provides quicker response, 18T favours relaxed highway riding.

Fitment:

✔ Bonneville 800 (2001–2006)
✔ Bonneville 865 (2005–2015)
✔ Scrambler 865 (2006–2016)
✔ Thruxton 900 (2004–2016)

Compatible with 525-pitch chain setups. Always verify chain pitch before installation, especially on modified motorcycles. Refer to our Triumph Bonneville Motorcycle Chain Sizes Explained for details.

Why Choose JT Sprockets?

JT is a leading global brand trusted by riders, mechanics, and workshops for OEM-quality sprockets that offer:

• Precise power delivery and smooth operation

• ISO-certified manufacturing standards

• Long-lasting materials engineered for real-world use

• Competitive value with no compromise on quality

Whether you're restoring, upgrading, or maintaining your Triumph Modern Classic, the JT 17T RB Front Sprocket offers the durability, fit, and performance enthusiasts expect from a premium drivetrain component.

Upgrade to JT Sprockets for precision, durability, and a smoother ride on your Triumph Modern Classic. Ideal for both daily commutes and long-distance touring.