Get the durability of steel with the lighter feel of aluminum. The Renthal Twinring™ Rear Sprocket is engineered for riders who want maximum lifespan from their drivetrain without adding unnecessary rotating weight. Its twin-material construction is designed to keep performance consistent in harsh motocross and enduro conditions.
Unlike standard aluminum sprockets that wear quickly in abrasive mud and sand, the Twinring uses a hardened, nickel-coated steel outer ring where it matters most—at the teeth—while keeping a high-strength 7075-T6 Ultralight™ aluminum inner ring to help reduce weight. The outer ring is heat-expanded and interference-fitted to the inner ring, with a wave pattern that helps ensure a permanent bond for the life of the chainwheel.
Key features:
✅ 7075 T-6 Ultralight™ aluminum inner ring (Renthal standard sprocket material)
✅ Electroless nickel-coated steel outer ring for ultimate wear resistance with minimal added mass
✅ Heat-expanded outer ring + interference fit with wave pattern for a long-lasting, permanent bond
Benefits of use:
🔹 Lasts up to 3x longer than a standard all-aluminum sprocket
🔹 Lighter than a full steel rear sprocket for better handling and response
🔹 Self-cleaning mud grooves help prevent dirt build-up, lowering wear and maintaining efficiency
Technical specifications (if needed):
📌 Brand: Renthal
📌 Model: Twinring™
📌 Mounting position: Rear
📌 Chain size: 520
📌 Tooth count: 51T
📌 Color/finish: Black
📌 Material: 7075-T6 Aluminum (inner) + nickel-coated steel (outer)
📌 Vendor part number: 1120-520-51GPBK
Why choose this product?!
⭐ Proven Renthal drivetrain engineering for demanding off-road riding
⭐ Hybrid design targets wear where it happens while keeping weight under control
⭐ A smart upgrade for riders who want fewer replacements and more ride time
