Hot Rods – Connecting Rod Kits, including kits for the 86-02 Honda CR 80 R and CR 80 RB Big Wheel, the 09-16 CRF 450 R, the 04-17 CRF 250 R and CRF 250 X, the 08-12 Suzuki RM-Z 450, KTM 50 SX minis, the 1990 Yamaha YZ250 and the 87-01 Honda CR500R. Each kit pairs a forged, shot-peened rod with a matched crank pin, big-end bearing and thrust washers, so the whole rotating joint is replaced as a set instead of mixing new parts with worn ones. On a dirt bike the rod sees violent load reversal every revolution, and hours of moto sprints, deep sand and long fifth-gear pulls hammer the big end until clearance opens up. Slop there kills timing consistency and can put the piston into the head. A fresh connecting rod kit brings the bottom end back to spec, so the engine revs clean, holds compression, and does not develop that knock under load on the pipe. On the track that means crisper throttle response out of corners, less vibration through the chassis, and a motor you can trust for a full moto instead of one you nurse home. Send us your year, model and displacement and we will verify the right rod kit before you buy.