Description
The ProX Piston Kit for Kawasaki Ultra 300 X LX 2011 2013 C size is the graded option for cylinders at the larger end of the standard bore tolerance. As with other ProX offerings in this range, it is primarily manufactured by Japanese OEM level suppliers to tight specifications, giving riders an economical yet dependable replacement choice. For supercharged Ultra 300 engines, the correct graded piston is a key part of a successful rebuild.
- C size piston kit matched to Kawasaki Ultra 300 X LX engines whose cylinders fall into the larger C bore class.
- Contains piston, ring pack, wrist pin, and circlips to complete the piston assembly for one cylinder.
- Produced to ProX standards by reputable Original Equipment manufacturers for accuracy and durability.
- Supports factory like clearances when installed in correctly measured C size bores, helping control noise and wear.
- Part of the ProX cast and forged piston lineup created specifically as OEM replacement components.
By using this C size kit, builders can maintain more precise control over operating clearances, especially important in engines that see high boost pressures and repeated high rpm usage. The result can be smoother operation, reliable ring sealing, and a power delivery that feels reassuringly close to stock. This makes the kit appealing for both recreational users and more performance minded Ultra 300 owners.
Carefully measure and classify each cylinder, inspect the supercharger, intercooler, and cooling system, and follow all service manual recommendations for assembly. Replace supporting components such as timing chains and tensioners as needed to complete the rebuild. When these details are addressed, the ProX C size piston kit becomes a trusted centerpiece of a durable, satisfying Ultra 300 engine refresh.
