One of our core product line, where we became famous with. Our ProX Connecting Rod Kits are made out of the toughest alloys available today and are made in Japan! O.E.M specifications and tolerances are meticulously maintained, a guarantee for easy installation and trouble free performance. Find our connecting rod dimension overview here.
ProX Rod Kit Features
Manufactured by leading Japanese OEM factories.
Designed to exact OEM specifications to be a direct and cost efficient OEM replacement.
Complete line for Dirtbike, ATV, PWC and 50cc/scooter available from stock.
Double forged on dedicated forgings
This process maintains superior strength, durability and dimensional consistency through improved grain flow.
Shot peening & barrelling
The design of a connecting rod is very important to guarantee the lifespan and the performance. Our connecting rods are barrelled and shot peened to improve the surface texture. Shot peening eliminates residual stress and smoothly blends the forging surfaces.
Oiling system
Our ProX oiling slots are precisely located to maximize lower rod oiling and extend bearing life. Even under the most extreme conditions the rod will do its job. ProX Connecting Rod Kits come complete with Crankpin, Big-End Bearing, Small End Bearing and Washers.
The PROX Con Rod Kit (Part Number 03.2403) is a high-quality replacement component designed specifically for Yamaha YZ250F and WR250F models from 2003 to 2011. This kit ensures reliable engine performance and durability by providing precision-engineered connecting rods built to meet or exceed OEM standards. Ideal for rebuilds, repairs, or upgrades, it offers a cost-effective solution for maintaining your motorcycle's powertrain integrity.
Constructed from durable materials, this kit features components that resist wear and withstand the stresses of off-road and motocross riding. The kit comes as a complete set, making installation straightforward and efficient, saving time and effort during engine assembly or repair. Compatibility with Yamaha's renowned performance ensures that your motorcycle maintains optimal power output and responsiveness.
Whether you're restoring a vintage bike or performing routine maintenance, the PROX Con Rod Kit delivers dependable quality and performance that you can trust. Built to OEM specifications, these connecting rods help extend the lifespan of your engine and keep it running smoothly through demanding riding conditions.
Features:
- Designed specifically for Yamaha YZ250F and WR250F models from 2003 to 2011
- Constructed from durable, high-quality materials for longevity
- Precision-engineered to meet or exceed OEM standards
- Complete kit includes all necessary connecting rods for easy installation
- Ideal for engine rebuilds, repairs, and performance upgrades
