Wiseco GP Series Piston Kit with Gaskets - Suzuki RM125 (2004-2008) - 58.00mm Bore (+4.00mm BIG BORE) - 2-Stroke Race-Spec
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Wiseco GP Series Piston Kit with Gaskets - Suzuki RM125 - BIG BORE
The Wiseco GP Series represents the pinnacle of 2-stroke piston technology for the Suzuki RM125. This is a BIG BORE kit (+4.00mm) that increases displacement from 125cc to 144cc - giving your RM125 serious power gains with GP Series race-spec features!
š„ BIG BORE: 125cc ā 144cc (+15.2%!)
This +4.00mm big bore kit provides a massive 19cc displacement increase - that's 15.2% more displacement for significantly improved power throughout the rev range!
ā ļø Important: Installation Requirements
- Sleeving or Replating Required - Cylinder must be bored to 58.00mm
- Fits SCEM (Suzuki Composite Electrochemical Material) coated cylinder
- Does not have an intake window
- Pinned on centerline
š GP Series Race-Spec Features
- Electra Coating - Crown, ring groove(s), and pin bores coated for maximum wear resistance
- ArmorGlideĀ® 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
Kit Includes
- Wiseco GP Series Piston - Premium 4032 aluminum alloy with Electra + ArmorGlideĀ®
- Ring Set
- Wrist Pin
- Circlips
- Wrist Pin Bearing
- Top End Gasket Set
Key Features
- GP Series design for professional-level racing performance
- 4032 aluminum alloy construction - optimized for 2-stroke applications
- Dual coating system - Electra + ArmorGlideĀ® 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
Displacement Increase
- Stock Bore: 54.00mm = 125cc
- Big Bore: 58.00mm = 144cc (+15.2% displacement!)
Important Notes
- Sleeving or replating required - cylinder must be bored to 58.00mm
- Fits SCEM coated cylinder only
- No intake window design
- Centerline pin location
- Wiseco ring types are not interchangeable
- Wiseco pistons can be fitted only with Wiseco rings
Piston Specifications
- Bore Size: 58.00 mm (+4.00mm Big Bore)
- Piston Diameter: 57.95 mm
- Stroke Length: 54.50 mm
- Material: 4032 Aluminum Alloy
- Skirt Coating: ArmorGlideĀ® + Electra
- Style: GP Series
Engine Specifications
- Displacement: 144cc (up from 125cc)
- Engine Type: 2-Stroke
- Weight: 0.91 lbs
Fitment
Suzuki:
- RM125: 2004-2007
- RM 125: 2008
Why Choose the Big Bore?
The +4.00mm big bore conversion combined with GP Series race technology gives your RM125 the ultimate competitive advantage. Popular for open class racing and riders who want maximum power!
š¦ 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.
