Triumph America/Speedmaster Chain and Sprocket Kit 18/42/112 PN MBI-B5251842

Chain and Sprocket Kit for Triumph America and Triumph Speedmaster

Chains and sprockets wear out, this kit assembled of BikeMaster® quality spares contains:

• 42 Teeth Rear Sprocket
• 18 Teeth Front Sprocket
• BMOR Series 525-112 Link Drive Chain

Chain and Sprocket Kit Fits:

• 03-06 America 800
• 07-16 America 865
• 03-05 Speedmaster 800
• 06-15 Speedmaster 865

BikeMaster® sprockets and chains are meticulously engineered using the highest quality materials and industry leading technology to provide the best replacement sprockets for your motorcycle. 

BikeMaster® o-ring chain offers high durability. The controlled heat-treating process that makes them tough. Reinforced rollers have high impact resistance.

Changing the number of teeth on a sprocket changes the final drive ratio of the bike. Less rear sprocket teeth=higher top speed, more sprocket teeth=more acceleration. Select the number of teeth above.

For installation, follow the instructions in your service manual.

The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.