ProTaper – ProTaper Rear Sprockets - Yamaha - 46-49 Tooth, including 46, 47, 48 and 49 tooth aluminum rear sprockets in black and blue, including shared Suzuki/Yamaha and Honda/Yamaha fitments, sits in the sweet spot for most YZ and YZF setups. Gearing in the mid-to-high forties keeps a bike close to its intended balance, so the engine pulls cleanly through each gear on fast outdoor tracks and sand sections without constant shifting or bouncing off the limiter. Riders chasing a slightly calmer, longer-legged feel start at 46 or 47 teeth, while 48 and 49 add a touch more drive for tighter layouts. Factory blue anodizing matches Yamaha bodywork, black suits custom builds, and both are cut from hard-anodized aluminum that trims rotating weight at the largest diameter in the drivetrain, where reducing mass helps acceleration and lets suspension work more freely. Shared Suzuki/Yamaha and Honda/Yamaha patterns broaden fitment across mixed garages. Precisely machined teeth keep chain rollers fully seated so wear spreads evenly rather than concentrating into hooks. Installing a straight, accurate ProTaper sprocket means quieter drive and consistent power to the ground.