Engines and Components› Pistons and Piston Rings
JE Pistons
JE Pistons Kawasaki ULTRA 300X Piston Kit
SKU: J001 300272
Moderate — 2–4 hours
Description
Part #: 300272
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged powersports pistons. Covering everything from the lake to the mountains, JE s watercraft and snowmobile pistons are engineered, forged and machined 100% in the USA. JE Pistons are designed for each specific engine and riding application to provide the ultimate combination of durability and performance. The heavy engine loads, excessive operational heat and high cylinder pressures of these engines were taken into account with every JE piston design, and the performance is proven with every handful of throttle. Equip your PWC or sled with the best in forged pistons.
Features:
- Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
- Designed specifically for each engine and use application to provide optimized performance durability
- Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
- Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
- Made 100% in the USA
JE, Kawasaki, Ultra 300X, 10.50:1, 83.00 mm Bore, 4 Cyl. Piston Kit
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
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Specifications
| Brand | JE Pistons |
| Part Number | J001 300272 |
Videos
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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