Renthal – Front Sprockets - Yamaha - ATV, including 520 pitch grooved sprockets for the YFZ 450X, YFM 700R Raptor, YFM 350 Raptor, YFS 200 Blaster and TT-R 230, quad gearing decides whether a machine launches hard or simply spins, and Yamaha's sport ATV range is well covered here. These countershaft sprockets are cut for 520 pitch chain in 13 to 15 tooth and fit the 06-23 YFZ 450X and YFM 700R Raptor, the 04-and-later YFM 350 Raptor that shares gearing with Kawasaki KDX and KX platforms, and the 88-08 YFS 200 Blaster and TT-R 230. The grooved tooth profile matters more on a quad than most riders expect, because four wheels carry sand and mud straight into the chain run; the grooves let that debris escape instead of grinding between roller and tooth. Running a 13 tooth shortens final drive for dune launches, tight woods and TT starts, while a 14 or 15 tooth stretches gearing for high-speed desert and open sand where top speed rules. Renthal is a name quad racers trust because these sprockets hold their edge through a full race season of abuse. Sand, trail and TT racing each ask for a different final drive on a quad.