
The JT Sprockets JTR1857.42 sprocket is a sleek and robust transmission part designed for quads and roadsters equipped with a 520 pitch chain. Made from C49 carbon steel with a black finish, this standard 42-tooth sprocket allows you to adjust the gearing to suit your acceleration or top speed needs.
Designed for replacement installation, this sprocket integrates with 520 pinions and chains to restore reliable transmission. Its C49 steel construction offers good mechanical strength and controlled wear under road and light off-road conditions. Ideal for gearing adjustments, it is aimed at motorcyclists and quad riders seeking a simple and durable replacement part.
Compatible vehicles include: YAMAHA YFZ 450 R SPECIAL EDITION 2WD (2020), YAMAHA YFZ 450 R 2WD (2020), and YAMAHA YFM 700 RAPTOR SPECIAL EDITION 2WD (2018).