Description
88mm engine sleeve from LA Sleeve R&D for all Yamaha 1.8L jet ski models Ref: YA-5688B LA Sleeve for YAMAHA 1.8L engine 1870cc Sold individually. Note: Product images may only represent the class of product and not the specific model.
Why choose LA Sleeve, LA Sleeve Cylinder Sleeve for Yamaha FX/FZ/VXR 1800 to 1870cc (Big Bore 1870cc 88mm)? This big bore sleeve is built for serious performance enthusiasts who are stretching Yamaha 1.8L platforms to 1870cc for huge torque and top end gains.
- High quality chrome moly / cast-iron alloy construction for excellent wear resistance and heat stability in high boost or high compression builds.
- Precision centerless ground outside diameter to simplify machine work and ensure proper interference fit.
- Engineered for big bore applications with correct wall thickness to support power while maintaining reliability.
- Boreable sleeve so future rebuilds are simple and cost effective even after aggressive racing use.
- Manufactured by LA Sleeve, a family owned company with decades of cylinder sleeve and racing experience.
- Ideal choice for turbo, supercharged, or high output naturally aspirated Yamaha 1.8L engines used in FX, FZ, and VXR models.
Fitment and notes: Professional machining, clearancing, and tuning are strongly recommended for big bore 1870cc builds. Always verify piston design, ring package, and cooling before final assembly on part number YA-5688B.
LA Sleeve big bore solutions are trusted by top engine builders for consistent wall thickness, clean machining, and predictable results in extreme performance PWC applications.




