Wiseco GP Series Piston Kit with Gaskets - Honda CR125R (2003) - 56.00mm Bore (+2.00mm BIG BORE) - 134cc - Nikasil - 2-Stroke Race-Spec
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- 30-day hassle-free returns
- Call us: 541-668-7503
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The Wiseco GP Series represents the pinnacle of 2-stroke piston technology for the Honda CR125R. This is a BIG BORE kit (+2.00mm) that increases displacement from 125cc to 134cc - giving your CR125R serious power gains with GP Series race-spec features!
✓ Fits:
- Piston does not have an intake window
- Pinned on centerline
- Longer skirt than stock (improved stability)
- Electra Coating - Crown, ring groove(s), and pin bores coated for maximum wear resistance
- ArmorGlide® Skirt Coating - Protection from micro-welding, galling, and detonation
- Extra Lightening Operations - Enhanced throttle response
- Made in USA - Engineered, forged, and machined in the USA
- Honda CR125R: 2003
- This kit is specifically designed for the 2003 Honda CR125R with Nikasil bore cylinder. Honda changed piston specifications between model years - verify your cylinder type before ordering.
✓ Features:
- GP Series design for professional-level racing performance
- 4032 aluminum alloy construction - optimized for 2-stroke applications
- Dual coating system - Electra + ArmorGlide® for ultimate protection
- Designed for endurance and sustained RPM riding
- Complete top-end gasket kit included
- Wrist pin bearing included - everything for a complete rebuild
- Longer skirt design for improved stability
- Stock Bore: 54.00mm = 125cc
- Big Bore: 56.00mm = 134cc (+7.2% displacement!)
- The +2.00mm big bore conversion combined with GP Series race technology gives your CR125R the ultimate competitive advantage for open class racing!
✓ What's Included:
- Wiseco GP Series Piston - Premium 4032 aluminum alloy with Electra + ArmorGlide®
- Ring Set
- Wrist Pin
- Circlips
- Wrist Pin Bearing
- Top End Gasket Set
Note: Sleeving or Replating Required - Cylinder must be bored to 56.00mm
Note: Sleeving or replating required - cylinder must be bored to 56.00mm
Note: Fits Nikasil bore cylinder only
Note: No intake window design
Ships fast from DuneGoonShop!
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
