Spring time is in full swing here at ProCycle. With these busy days please be sure to let us know if your order is time sensitive. We try to do as much as we can to accommodate your upcoming trip.
The Moose Racing is a quality chain roller with 2 sealed ball bearings. The stock roller has no bearings. It's just a plastic wheel riding on a bolt. Ball bearing chain rollers are smoother, quieter and last longer.
Reduce the friction dragging down your drivetrain. This chain roller is made from Delrin®, it's self-lubricating and a significant improvement over stock.
Does not use a bearing but rides directly on the frame boss. There is no mounting hardware included.
For reference, the stock gearing for the WR250R is 13/43 while the X model runs with a 13/42 stock configuration because of the SM wheels/tires. Both use a 108 link chain with the stock gearing.
The JT rear sprockets listed are made from the finest 545C high carbon steel and are then heat treated and hand finished to meet or exceed OEM standards. Outlasts many mild steel or surface hardened sprockets as much as two and three times over.
Limited availability on Aluminum from PBI. Manufactured from aircraft 7075 T651 Plate Aluminum.
If you want the additional low-end grunt that the 46, 48 or 50 tooth rear sprocket will give you, you will need longer chain as well.
New Rear Sprockets require new Sprocket Bolts because of a difference in the holes vs. the stock bolts.