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SKU: RCS07700 | UPC: 193564176493
Wiseco 77.0mm Ring Compressor Sleeve for Kawasaki KX250F 2004-2024, Yamaha YZ250F 2006-2024, Suzuki RM-Z250 2007-2024
Wiseco 77.0mm ring compressor sleeves provide a precision tool for installing pistons during high-performance engine rebuilds on motocross bikes. This sleeve fits Kawasaki KX250F 2004-2024, Yamaha YZ250F 2006-2024, and Suzuki RM-Z250 2007-2024 models with 77mm bores. Forged in-house in the USA, it compresses rings evenly to avoid damage and ensure smooth assembly in demanding off-road applications.
Key Features
- 77.0mm Precision Bore: Matches Wiseco pistons and OEM 77mm bores exactly for a secure fit that prevents slippage during installation
- Forged Phenolic Resin: High-strength material withstands cracking and handles repeated professional engine builds without failure
- USA Manufacturing: In-house forging delivers tight tolerances and reliable performance for critical piston jobs
- Tapered Sleeve Design: Guides the piston into the cylinder smoothly while compressing rings uniformly across the bore
- Lightweight Build: Weighs just 0.1 lbs for easy handling in tight spaces during motocross and off-road engine rebuilds
Product Notes
- Reusable design handles multiple engine installations when cleaned properly after each use
- Inspect sleeve for wear before each use to ensure ongoing compression accuracy
- Ships in protective sleeve inside 4 x 4 x 2 inch box for secure delivery
Installation Notes
- Professional installation recommended.
- Combine with quality ring compressor pliers for controlled and even ring compression
- Compatible with Wiseco 77mm pistons and OEM connecting rods on listed models
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2024 | Kawasaki | KX250F | All |
| 2006-2024 | Yamaha | YZ250F | All |
| 2007-2024 | Suzuki | RM-Z250 | All |
Why Choose Wiseco?
- Proven track record in motocross piston and tool innovation since 1986
- USA-forged components deliver unmatched build quality
- Precision engineering supports demanding high-performance rebuilds
Frequently Asked Questions
-
Q: Will this ring compressor fit my KX250F engine rebuild?
A: Yes, it fits all Kawasaki KX250F 2004-2024 models with the stock 77.0mm bore, plus compatible Wiseco piston kits. -
Q: What material makes up the Wiseco RCS07700?
A: Forged phenolic resin provides durability, reusability, and resistance to compression stress during installs. -
Q: Does Wiseco offer support for installation issues?
A: Follow included instructions or consult Wiseco tech support. Tool covered under limited manufacturer warranty.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective sleeve in 4 x 4 x 2 inch box
- Weight: 0.1 lbs
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