Renthal Ultralight Rear Sprocket (Silver, 49T) 191U-420-49GESI - Kawasaki KX85 / KX100 / KX112 1988-2025

Product Description

Maximize your power transfer and reduce unsprung weight on your Kawasaki youth race bike with the Renthal Ultralight Rear Sprocket. Engineered specifically for high-performance off-road riding, this sprocket delivers professional-grade durability without adding unnecessary mass to your rear wheel.

Manufactured from high-strength, specially enhanced 7075-T6 aluminum, these precision CNC-machined sprockets are 33 percent lighter than steel. The computer-aided ultra-light design drops weight significantly while featuring a specialized tooth profile that allows the chain to roll easily on and off for longer wear, less noise, and more power.

Top Features: Renthal Ultralight Rear Sprocket

• CNC-machined (not stamped) with a computer-aided ultra-light design to reduce unsprung weight and boost power transfer.
• Made from high-strength, specially enhanced 7075-T6 aluminum that is 33% lighter than steel.
• Special tooth profile allows the chain to roll easily on and off for extended wear life and less noise.
• Engineered specifically for a 420 chain size to ensure optimal drivetrain performance.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: How much weight does this aluminum sprocket save compared to steel?
A: It is constructed from high-strength 7075-T6 aluminum that is 33% lighter than comparable steel sprockets to reduce rotating mass.

Q: What chain pitch size is required for this sprocket?
A: This specific rear sprocket is designed to match a 420 chain size.

Expert Pro-Tip

Expert Pro-Tip: Always inspect your chain rollers, guides, and front countershaft sprocket when installing a new rear sprocket. Running an aluminum rear sprocket alongside worn front sprockets or a bound chain will drastically accelerate tooth wear.

Recommended Pairings:

• MX Chains
• Kawasaki KX85 Performance Parts
• Motorcycle Tools & Accessories

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