Additional Images

Engine Internals Upgrade Kit

Was: $2,354.60
Sale: $2,258.88
Save: 4%
Save: $95.72


Our Engine Upgrade Kit delivers bulletproof reliability to the 4-TEC 1.5L 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.

RIVA Pro-Series Pistons are installed. Our high-strength forged racing pistons 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 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.

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.

NOTE: In addition to the above RIVA components we strongly recommend our Crank Balancing Service to ensure proper balance. This is especially important for highly modified craft and closed course/endurance race craft. Contact our parts representatives for more information.

NOTE: RIVA Performance Kits intended for competition use only.


  • RS10050-EIUK
  • RS10050-EIUK
  • Performance Kits
  • New

Shipping Information

  • Item Requires Shipping