Best current price£54.99from GhostBikes.com
Shopping.co.uk recommended and popular offers
GhostBikes.com£54.99Visit shop Renthal Blue Ultralight Rear Sprocket - Ktm Sx85 & Husqvarna Tc85 & Gas Gas Mc85 2003-24 - 50T
Visit shop17 offers from £54.99 - £63.49
View price history by clicking the chart icon.
The Renthal Ultralight Rear Sprocket (50T Blue) is designed specifically for motocross and enduro riders who demand professional-grade durability and weight reduction for competitive performance. It offers a specialized grooved design to maintain chain contact and improve longevity under harsh racing conditions, though riders should note it is engineered for specific 85cc model compatibility and requires routine maintenance to preserve its precision finish.
| Model Part Number | 441U-428-50GPBU |
|---|---|
| Brand | Renthal |
This specific part number (441U-428-50GPBU) is intended for a 428-pitch chain. Please check your chain size before purchase.
The blue color is an anodized finish, which is integrated into the metal surface and resists peeling better than paint, though it can fade or scratch under heavy use.
Replace the sprocket when teeth become sharp, 'hooked', or thin. It is best practice to replace the chain and both sprockets as a set.
This sprocket is engineered specifically for motocross and enduro applications and is optimized for off-road performance, not sustained high-speed highway use.
The grooves allow mud, dirt, and sand to pass through rather than packing into the teeth, which keeps the chain running smoothly.
Check chain tension for proper slack and inspect sprocket teeth for premature wear or 'hooking'.
Ensure the rear wheel is perfectly aligned and the sprocket is properly seated on the hub with all bolts torqued correctly.
This is normal during standard operation due to grit; ensure the chain is regularly cleaned and lubricated to minimize abrasive wear.
Compatibility is strictly limited to the following models: GAS GAS MC85 (2021-2024), KTM SX85 (2003-2024), and Husqvarna TC85 (2014-2024). During installation, ensure the mounting bolts are tightened to the manufacturer's specified torque settings using a calibrated torque wrench. It is critical to inspect the sprocket teeth periodically for signs of hooking or excessive wear. For cleaning, use a dedicated chain cleaner and a soft-bristled brush to remove grime; avoid harsh chemicals that may strip the anodized blue coating. Always pair a new sprocket with a new chain to prevent premature failure of both components.
