Description

When cylinder wear exceeds standard tolerances, rebuilding with stock-size pistons won’t restore proper sealing or compression. This Yamaha VXS 1800 HO +.50mm engine rebuild kit is designed for those engines that need a larger bore correction to maintain long-term reliability.

Because all kit components are chosen to work together with oversize pistons, you avoid mismatched parts and reduce guesswork during assembly. In addition, REV6 inspects every component before shipment, so you can install with confidence.

Instead of patching single wear points, this complete kit renews the internal rotating, timing, and sealing parts that typically wear together in high-hour marine engines.

THIS KIT INCLUDES

• Crankshaft – 6S5-11411-01-00
• Cam chain – 94591-66152-00
• Cam chain damper guide – 6BH-12251-00-00
• Cam chain tension guide – 6BH-12252-00-00
• Cam chain upper guide – 6BH-12241-00-00
• Complete gasket kit – 6CR-W0001-01-00, 6CS-W0001-01-00, 6HM-W0001-00-00, 6HM-W0001-01-00
• Oversize +.50mm piston kits – 6BH-11631-00-B0
• Connecting rods – 6BH-11650-10-00
• Connecting rod bearings (black) – 6S5-11656-50-00
• Crankshaft bearings (green) – 6S5-11416-40-00
• Intake camshaft – 6BH-12171-10-00
• Exhaust camshaft – 6BH-12181-10-00
• Camshaft gears – 6D3-12176-10-00, 90105-07004-00

WHY CHOOSE THE +.50MM KIT

Engines with cylinder taper or wear beyond standard limits need larger pistons to restore sealing and compression. Therefore, a +.50mm build corrects that wear and helps prevent blow-by and oil loss. Because this kit includes all major internal parts, you get a matched set that works together.

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Yamaha VXS 1800 HO Engine Rebuild Kit +.50mm

SUPPORT & RESOURCES

First, review our warranty policy to understand coverage. Then, explore troubleshooting and rebuild tips on the REV6 blog. You can also find answers in our FAQ center or contact our team for help confirming fitment or sizing.

FITMENT

Yamaha VXS 1800 HO
2013–2015 Models

TAKE ACTION
If your engine needs a heavier oversize rebuild to restore compression and performance, this +.50mm master kit gives you the parts you need. Ships nationwide—add it to your cart and rebuild with confidence.

We proudly support veterans and service members with special REV6 discounts.