Description

When your Yamaha SX240 1800 HO engine still measures within factory bore limits, a standard-size rebuild is the correct path forward. Instead of oversizing unnecessarily, this master rebuild kit restores factory clearances while preserving long-term reliability.

Because this is a complete master kit, all critical systems are refreshed together. As a result, compression stabilizes, timing accuracy returns, and oil control improves across the entire engine.

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
• STD 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 STANDARD-BORE MASTER KIT?

This kit is designed for engines that do not require cylinder overboring. By retaining standard piston sizing, factory tolerances stay intact. Consequently, the rebuild maintains original compression ratios while extending engine service life.

FITMENT

Yamaha SX240 1800 HO Jet Boat
2013–2015

WARRANTY & SUPPORT

Every component is backed by a 1-year REV6 parts warranty. For coverage details, review our warranty policy. If questions come up during planning or installation, visit the FAQ page or contact our team.

TAKE ACTION

If your SX240 engine is within factory bore limits and needs a full internal reset, this STD master rebuild kit delivers the right solution. Order today and rebuild with confidence.

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