Engines and Components› Pistons and Piston Rings

JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Single

$314.99

SKU: J001 317561S

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The JE Pistons Single Kawasaki Ninja 250R piston, part number 317561S, is a forged piston designed for the Kawasaki Ninja 250R. It features a 66.00 mm actual bore, with an oversize of +4.00 mm. The piston is designed to achieve a 13.5:1 compression ratio, resulting in a displacement of 282 cc. It is made to order in the USA and features an FSR skirt type. Each piston weighs approximately 140-141g.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandJE Pistons
Part NumberJ001 317561S

Videos

klx250sf - klx351sm

klx250sf - klx351sm

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.

View Full Return Policy