Renthal – Front Sprockets - Suzuki - Mini & Youth, including 428 pitch sprockets for the Suzuki RM 85 and RM 85L, 420 pitch for the RM 65 and DR-Z 110, and 13, 14 and 15 tooth options, small-bore machines are far more sensitive to gearing than big bikes, because a young rider cannot simply add throttle to cover a bad ratio. This selection focuses on the countershaft sprockets that make a mini rideable: 428 pitch for the 89-22 RM 85 and 04-19 RM 85L, which also covers the 93-01 Yamaha YZ 80, and 420 pitch for the 03-05 RM 65 and 04-06 DR-Z 110, shared with the 86-24 Kawasaki KX 60-112 and 02-09 KLX 110. A 13 tooth pulls a two-stroke mini out of tight corners without clutch abuse, while a 14 or 15 tooth keeps rpm from screaming on longer straights and helps a beginner ride a gear higher and smoother. Accurate pitch keeps chain tension consistent, which matters on short swingarms where slack changes quickly. Parents and pit crews rely on Renthal because these sprockets stay true through a full season of racing and practice days. On an RM 85, the right ratio lets a young rider stay smooth instead of chasing revs.