Description

When cylinders wear lightly but still have life left in the block, stepping up to +.25mm pistons helps restore proper clearance and compression. This Yamaha SX240 1800 HO +.25mm complete engine rebuild kit gives you the matched parts needed to correct that wear and renew performance on the water.

Because all components in this kit are selected to work together, you avoid mismatched parts and reduce guesswork during assembly. In addition, REV6 inspects every piece before it ships so you install components you can trust.

Instead of replacing a couple of worn parts at a time, this complete kit renews key rotating, timing, and sealing systems in one package. That approach helps improve throttle response, idle quality, and long-term reliability.

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 +.25mm 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 SX240 1800 HO Engine Rebuild Kit +.25mm

WHY THIS KIT MATTERS

Light bore wear can reduce ring seal and rob compression, which leads to poor throttle response and rough idle. Because this kit includes oversize pistons and all the wear parts that go with them, it helps restore proper clearance and reliable performance.

Also, renewing the timing and sealing components at the same time means you rebuild the engine as a full system instead of patching one part at a time.

SUPPORT & RESOURCES

Before ordering, review our warranty policy to understand coverage details. Next, find rebuild insight on the REV6 blog or check common questions in our FAQ center. If you need help confirming fitment or sizing, contact our team for guidance.

FITMENT

Yamaha SX240 1800 HO
2013–2015 Models

TAKE ACTION
If your SX240 engine shows signs of light cylinder wear, this +.25mm rebuild kit gives you the correct foundation to fix it right. Nationwide shipping available—add it to your cart and rebuild with confidence.

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