WSM Platinum Series Top End Rebuild Kit for Yamaha 1800 HO Non-Supercharged Engines (2009–2023) – Standard Bore – Part # 010-874-10P

WSM Platinum Series Top End Rebuild Kit for Yamaha 1800 HO Non-Supercharged Engines (2009–2023) – Standard Bore – Part # 010-874-10P

Restore power, compression, and reliability to your Yamaha WaveRunner or Sport Boat with this premium WSM Platinum Top End Rebuild Kit. Designed specifically for non-supercharged Yamaha 1800 HO (High Output) engines, this complete kit delivers OEM-level quality at a better value — perfect for high-hour engines showing signs of wear, low compression, or oil consumption.

This is the standard bore version (approximately 85.90mm), ideal when your cylinders are still within spec and only need honing. Made with high-strength hardened aluminum pistons featuring a durable non-abrasive coating to resist skirt and ring groove damage for longer life and smoother operation.

What’s Included in the WSM 010-874-10P Kit:

• 4 × Platinum Series pistons (standard bore)
• Piston rings (high-performance set)
• Wrist pins and circlips
• Top end needle bearings
• Complete top end gasket set (head gasket, base gasket, intake & exhaust gaskets)
• All necessary hardware for a full top-end rebuild

Wide Fitment for Popular Yamaha Models (Non-Supercharged Only):

This kit fits a huge range of 2009–2023 Yamaha 1800cc naturally aspirated (non-supercharged) personal watercraft and boats, including:

• FX Series: FX HO, FX Cruiser HO (2009–2023)
• VX Series: VX Cruiser HO, VX Limited HO, VXR, VXS (2011–2023)
• 190 / 252 Series: 190 FSH, 190 FSH Deluxe, 190 FSH Sport, 252 FSH Sport, 252S, 252SD, 252SE, 252XE, AR 190, SX 190 (2012–2023)
• 212 / 242 Series: 212 SS, 212 X, 212 LTD, 212 S, 242 LTD, 242 LTD S, 242 S, 242 X (2010–2021)
• And many more (full list below)

Important Note: This kit is for non-supercharged models only. Do not use on SVHO or supercharged 1800 engines (use 010-875 series instead).

Whether you're rebuilding a high-mileage Yamaha FX Cruiser HO, VXR, 212 X, 242 LTD, or 190 FSH, this WSM Platinum top end kit provides everything needed for a professional-quality refresh. Many owners report noticeably smoother operation, restored top-end power, and improved reliability after installation.

Why Choose WSM Platinum?

• Pistons manufactured to exact OEM specifications with enhanced durability
• Premium Japanese rings for excellent sealing and longevity
• Complete gasket set included — no extra hunting required
• Trusted by PWC technicians and enthusiasts worldwide

Applications (partial list – verify with your exact model/year):

• 2009–2023 FX HO / FX Cruiser HO
• 2011–2023 VXR / VXS / VX Cruiser HO
• 2012–2023 AR 190 / SX 190 / 190 FSH (all variants)
• 2010–2021 212 SS / 212 X / 212 LTD / 242 LTD / 242 S
• 2021–2023 252 FSH Sport / 252S / 252SD / 252XE and more

OEM Cross Reference: Replaces / equivalent to Yamaha piston 6BH-11631-00-B0 and related components.

Ready to ship – fast turnaround for your next weekend on the water. Pair it with a full bottom-end refresh or WSM gasket kits for a complete engine overhaul.