Renthal Twinring Rear Sprocket (49T) 1120-520-49GPGN - Kawasaki / Suzuki KX125 / KX250 / KX450 / KLX250 / KLX300 1984-2026

Product Description

The Renthal Twinring Rear Sprocket is engineered to deliver the ultimate combination of ultra-lightweight performance and exceptional durability for aggressive off-road, enduro, and motocross riding. Designed specifically to endure punishing track and trail environments, this 49-tooth green sprocket outlasts standard aluminum alternatives while maintaining a minimal rotating weight advantage.

Featuring an innovative dual-material architecture, the inner ring utilizes high-strength Ultralight 7075 T-6 aluminum, while the outer ring is manufactured from electro-less nickel coated steel[cite: 1]. The outer ring is expanded at 200°C and then fitted over the inner core, creating a permanent interference fit that—alongside a distinct wave pattern and flat socket head screws—guarantees maximum structural reliability during severe side impacts[cite: 1].

Top Features: Renthal Twinring Rear Sprocket

• Inner ring is crafted from the exact high-strength Ultralight 7075 T-6 aluminum utilized in standard Renthal sprockets[cite: 1].
• Outer ring is electro-less nickel coated steel built with minimal material to keep overall weight exceptionally low[cite: 1].
• Precision thermal expansion fit at 200°C combined with flat socket head screws secures a permanent bond and prevents chain guide interference[cite: 1].
• Integrated self-cleaning mud grooves between every tooth actively prevent dirt packing to minimize wear and maintain lower weight[cite: 1].
• Designed to outlast conventional all-aluminum sprockets by up to three times while remaining much lighter than a solid steel alternative[cite: 1].

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 is the permanent bond created between the aluminum inner core and steel outer ring?
A: The steel outer ring is heated and expanded at 200°C, then placed over the inner aluminum core. As it cools, the precise interference fit locks them permanently together, supported by flat socket head screws and a wave interface pattern[cite: 1].

Q: Do the self-cleaning mud grooves make a noticeable difference in muddy conditions?
A: Yes, the integrated grooves between each tooth channel away dirt, sand, and mud during rotation, preventing abrasive buildup that accelerates sprocket and chain degradation[cite: 1].

Expert Pro-Tip: Always inspect your drive chain and front sprocket when installing a new rear sprocket. Putting a fresh hybrid sprocket like the Twinring onto an excessively worn, stretched chain can lead to premature tooth wear. Clean the mounting surface thoroughly and torque your sprocket bolts to factory specifications using a quality thread-locker.

Recommended Pairings:

• MX Chains
• Kawasaki 4-Stroke Performance Parts
• Motorcycle Tools & Accessories

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