Renthal – Front Sprockets - Yamaha - Street, including countershaft sprockets for the YZF-R6, YZF-R7, YZF-R1 S, the 2025 YZF-R9, FZ6 and Tenere 690 in 520 and 525 pitch, on the road and at track days, Yamaha's supersport and sport-touring machines respond immediately to a front sprocket change, and this group covers both classic and current models. 520 pitch options in 15 and 16 tooth fit the 87-09 FZ6, YZF-R6, YZF-R7 and FZR 750-1000, plus the 2025 YZF-R9 and the YZF-R1 S. Riders keeping the heavier stock chain size get 525 pitch 15 tooth gearing for the 06-23 YZF-R6 and the 20-24 XTZ 690 Tenere. Going down a tooth shortens the ratio so the bike drives harder out of second and third gear corners and feels more eager in traffic, while staying taller keeps cruising rpm and chain speed lower for highway and adventure miles. Hardened steel with square, accurately spaced tooth flanks resists hooking, which is what makes a tired drivetrain snatch at part throttle. Renthal developed its sprocket manufacturing under racing pressure, and Yamaha street riders get that same precision in a straightforward bolt-on upgrade that sharpens throttle feel.