Description

When engine bore wear goes beyond light correction, +.50mm pistons give you the room needed to restore sealing and compression. This Yamaha SX190 1800 HO +.50mm complete engine rebuild kit supplies all the major parts to correct wear and renew long-term performance on the water.

Because this kit brings together all key rotating, timing, and sealing components, you rebuild the engine as a whole system instead of fixing isolated pieces. In addition, REV6 inspects every component for fit and quality before shipment, so you install parts that work together under load.

Rather than repairing only a few worn parts at a time, this complete kit targets all major wear areas. As a result, you get more consistent compression and smoother overall performance than piecemeal repairs.

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

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Yamaha SX190 1800 HO Engine Rebuild Kit +.50mm

WHY THIS KIT MATTERS

Heavy cylinder wear can let ring seal slip and lower compression. Because this kit pairs oversize pistons with all associated wear items, it restores proper clearances and helps recover compression that a standard rebuild can’t.

Also, renewing timing and sealing systems together helps reduce repeat issues and gives you smoother operation out on the water.

SUPPORT & RESOURCES

Before ordering, review our warranty policy for coverage details. Next, explore rebuild insights on the REV6 blog or check common answers in our FAQ center. If you need help confirming parts or fitment, contact our team for guidance.

FITMENT

Yamaha SX190 1800 HO
2013–2015 Models

TAKE ACTION
If your engine has heavy bore wear and needs more than a standard rebuild, this +.50mm kit gives you the matched parts needed to fix it right. Ships nationwide—add it to your cart and rebuild with confidence.

We proudly support veteran and active service member discounts at REV6.