Description

When cylinder wear exceeds standard or +0.25mm limits, stepping up to a +0.50mm overbore becomes the correct move. Rather than forcing marginal parts to work, this Yamaha VXR 1800 HO master rebuild kit resets critical tolerances and restores long-term reliability.

Because this is a full master kit, the rotating assembly, valve train, and timing components are refreshed together. As a result, compression improves, oil control stabilizes, and timing accuracy returns to spec.

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 +0.50mm 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 valves – 6S5-12111-00-00
• Exhaust valves – 6S5-12121-00-00
• Intake camshaft – 6BH-12171-10-00
• Exhaust camshaft – 6BH-12181-10-00
• Camshaft gears – 6D3-12176-10-00, 90105-07004-00

WHY A +0.50mm MASTER KIT?

This kit targets engines that require a deeper bore cleanup due to scoring or wear. By moving to +0.50mm pistons, the cylinder walls clean up properly. Consequently, ring seal improves while blow-by and oil consumption are reduced.

FITMENT

Yamaha VXR 1800 HO WaveRunner
2013–2015

WARRANTY & SUPPORT

All components are covered by a 1-year REV6 parts warranty. Before ordering, review coverage details in our warranty policy. For installation or compatibility questions, visit the FAQ page or contact our team.

TAKE ACTION

If your VXR 1800 HO engine needs a full reset beyond minor overbores, this +0.50mm master rebuild kit delivers the correct fix. Order today and rebuild it once—with confidence.

Veterans and active-duty servicemembers qualify for exclusive REV6 discounts—thank you for your service.