Sale

Engines and Components› Pistons and Piston Rings

Athena

Athena 04-09 Honda CRF 250 R 81.96mm Bore 4T Forged Piston

$289.95 $240.53 Save $49.42

SKU: A0EF S5F08200001B

Out of Stock
In Stock
Ships by Jun 15
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Athena's 4-stroke off-road forged pistons are made by reverse extrusion using cutting-edge CNC machining tools, ensuring dimensional tolerances under 0.01 mm. They are crafted from a high-performance aluminum alloy with a high silicon content, offering reliability, increased resistance, and excellent performance. The smooth profile ensures regular flow and flame propagation.

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

BrandAthena
Part NumberA0EF S5F08200001B

Videos

4 Stroke Motorcycle Cylinder Replacement: Your Complete Guide ⚙️ Honda CRF250R

4 Stroke Motorcycle Cylinder Replacement: Your Complete Guide ⚙️ Honda CRF250R
Dirt bike build: 250 to 300cc | How to install the Athena Big Bore Extreme kit on a Honda CRF250R

Dirt bike build: 250 to 300cc | How to install the Athena Big Bore Extreme kit on a Honda CRF250R
CRF 280 Project

CRF 280 Project

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