Our Engine Upgrade Kit delivers bulletproof reliability to the Yamaha 1.8L SHO engine in racing and high boost applications. When you're pushing it to the limit and looking for maximum dependability, our Engine Internals Upgrade Kit is a must.

Kit Includes
CP Piston Kit, Yamaha SHO, 86mm, 8.6:1
M1077A
CP Piston Kit, Yamaha SHO, 86mm, 8.6:1
M1077A
CP Piston Kit, Yamaha SHO, 86mm, 8.6:1
M1077A
CP Piston Kit, Yamaha SHO, 86mm, 8.6:1
M1077A
RIVA Cylinder Head Stud Kit Yamaha 1.8L Engines
RY10040-HSK
RIVA Yamaha 1.8L Crankcase Main Stud Kits
RY10840-CMSK-1LB
RIVA Yamaha 1.8L Pro-Series Cylinder Head Gasket (86MM-Standard Bore)
RY10040-CHG-86
RIVA Yamaha Valve Train Upgrade Kit, 1.8L
RY19040-VTU-2
Carrillo Rod Set Yamaha 1.8L
PSR5551-4

RIVA Pro-Series Cylinder Head Stud Kit is installed. Stud kits reduce fatigue on threads in cylinder head while dramatically increasing reliability through more accurate & consistent torque loading. More uniform clamping force on head gasket helps prevent blown head gaskets and ensures optium engine sealing.

RIVA Pro-Series Cylinder Head Gasket is installed. Developed to withstand the severe heat and pressure generated by high-boost and high horsepower applications. Durable three layer stainless construction is Viton coated and embossed to resist corrosion, improve sealing and promote event torque loading.
CP Pistons are high-strength forged racing pistons that deliver maximum reliability and performance in high boost & turbo applications. Optimized dome design, improved lubrication hole placement, premium low-friction ring package, tool steel wrist pin & carbon steel wire locks ensure added reliability in high horsepower engines.

RIVA Valve Train Upgrade Kit is installed. Titanium valve retainers and heavy-duty valve springs increase reliability of modified engine by recucing the possibility of valve float at high RPM. To ease installation of Valve Train Upgrade Kit we offer a unique Valve Compression Tool that allows installation without removal of cylinder head saving you time and money.

RIVA/Carrillo Connecting Rods are installed. Unique H-beam design is forged from an ultra high-strength alloy and rated to 500+ horsepower making these rods substantially stronger and lighter than OEM equipment; allowing your engine to rev quicker and hold up to the punishing demands of high boost applications.

RIVA Crankcase Main Stud Kit is installed. Stud kit reduces fatigue on threads in cranksase while dramatically increasing reliability through more accurate & consistent torque loading. More uniform clamping force on crankshaft helps prevent crankcase deflection under heavy load.