Renthal Twinring™ Rear Sprocket, 50-Tooth Blue (2240-520-50GPBU)

Upgrade your motorcycle’s drivetrain with the Renthal Twinring™ Rear Sprocket, Part 2240-520-50GPBU. This 50-tooth rear chainwheel combines a high-strength Ultralight™ 7075-T6 aluminum inner ring with an electroless nickel-coated steel outer ring for a balance of low weight, strength, and long-term durability. The blue finish adds a distinctive appearance while maintaining the performance expected from Renthal components.
The outer ring is manufactured with minimal material to reduce weight and is expanded during production before being fitted over the inner ring. This interference fit, combined with the engineered wave pattern, creates a permanent bond designed to remain secure throughout the life of the chainwheel. Flat socket-head screws add strength during side impacts and help prevent contact with the chain guide, supporting reliable operation in demanding riding conditions.
Self-cleaning mud grooves between each tooth help prevent dirt buildup, reduce chainwheel wear, and keep unnecessary weight to a minimum. Compared with a standard all-aluminum sprocket, the Renthal Twinring™ design is engineered to last up to three times longer while remaining considerably lighter than an all-steel rear sprocket. It is a practical choice for riders seeking durable, responsive drivetrain performance in off-road and high-load environments.
Feature: 50-tooth rear sprocket configuration
Feature: Ultralight™ 7075-T6 aluminum inner ring for high strength and reduced weight
Feature: Electroless nickel-coated steel outer ring for enhanced durability
Feature: Interference-fit construction with a wave pattern for a permanent bond
Feature: Flat socket-head screws improve impact strength and clear the chain guide
Feature: Self-cleaning mud grooves help reduce dirt buildup and chainwheel wear
Feature: Blue finish with Renthal Twinring™ construction

Features:

• 50-tooth rear sprocket configuration

• Ultralight™ 7075-T6 aluminum inner ring for high strength and reduced weight

• Electroless nickel-coated steel outer ring for enhanced durability

• Interference-fit construction with a wave pattern for a permanent bond

• Flat socket-head screws improve impact strength and clear the chain guide

• Self-cleaning mud grooves help reduce dirt buildup and chainwheel wear

• Blue finish with Renthal Twinring™ construction

Ships from Parts Unlimited.