Engine Parts

HPI Racing piston pin and retainer set are constructed of silver metal. Replaces worn or damaged piston pin and retainer. Requires: Installation on...

This is the HPI Starting Shaft for the Savage X 4.6. This Starting Shaft must be used with the HPI Nitro Start Back Plate Set (G/F Series HPI109535...

HPI Racing chromed brass cylinder with aluminum piston and factory installed aluminum connecting rod, piston pin and two pin retainers. Requires: I...

HPI Racing bearing is constructed of steel with preinstalled one-way bearing Specs: Hex size: 9/16" (14mm)Inside diameter: 1/4" ( 6mm) Requires:Â...

HPI Racing crankshaft is constructed of machined steel with pilot shaft style (SG shaft). Requires: Installing in crankcase Specs: Length: 3.07" (...

HPI Racing connecting rod has knife-edge billet aluminum construction with dual bushings. Requires: Attaching to piston and crankshaft

HPI Racing starting pin and pressure spring are constructed of steel. These parts are installed into the back of the crankshaft and is what the sta...

HPI Racing cylinder piston and connecting rod is made of ABC construction, Aluminum piston with a Brass cylinder that is Chrome plated. Replaces wo...

HPI Racing main carburetor body is constructed of black and purple aluminum and composite material. Low speed spray bar is preinstalled. This is a ...

This is the HPI SG Shaft/F3.5 Crankshaft for the HPI Trophy 3.5 and the Nitro Star F3.5 Engine with Pullstart, SG Shaft/F3.5.Features: Silver color...

This is the HPI Aluminum Heatsink Head. This Heatsink Head is black colored and is compatible with the HPI Trophy 3.5 and the Nitro Star F3.5 Engin...

HPI Racing crankcase is constructed of black aluminum with pre-installed front and rear crankshaft bearings. Requires: Installing all engine compon...

This is the Aluminum Heatsink Head for the HPI Nitro Star F4.6 Engine, HPIG1495. Features: Anodized billet aluminum construction, gun metal gray in...

HPI Racing idle needle valve is constructed of brass, gold in color. Threaded with two O-rings pre-installed. Specs: Length: 37.5mm (1.48")Diameter...

HPI Racing underhead is constructed of silver aluminum. Replaces a worn or damaged underhead. Goes between the heat sink head and the crankcase. Th...

This is the HPI Black Steel Uniball for use with the HPI G3.0 Slide Carb Engine with Pull Start.Features: Black colored Steel construction For use ...

HPI Racing Main Needle/Fuel Intake Set .21 BB

This is the complete slide valve carburetor for the HPI F4.6 engine.Features: Composite construction, assembled and ready to installIncludes: Compl...

HPI Racing stock replacement recoil assembly for the .21BB Engine features a assembled pull-starter. This recoil is made specifically for the HPI ....

HPI Racing cylinder gasket is constructed of metal and is gold in color. Includes four cylinder gaskets. Specs: Inner Diameter: .70" (18mm)Outer Di...

HPI Racing .2mm head gasket is constructed of silver aluminum. This can be reffered to as a head gasket, a cylinder gasket, or a head shim. Specs: ...

HPI underhead is constructed of silver aluminum. CNC machined and drilled for cylinder head screws. This mounts underneath the cylinder head and th...

HPI Racing Carburetor Lock Pin .21 BB,S25,F4.1

HPI Racing cylinder, piston, and connecting rod set features ABC construction (Aluminum, Brass, Chrome). Four intake ports, one exhaust port. This ...

HPI Racing starting shaft is constructed of metal. Silver in color. Machined for recoil tab on crankshaft. Specs: Length: 1.18" (30mm)Diameter of ...

This is the one-way bearing for the HPI Nitro Star 21BB engine. This one-way bearing allows the recoil starter to grab the crankshaft to start the ...

This is a start pin and pressure spring for the HPI Nitro Star .21BB engine.Features: Steel pin and pressure springIncludes: One 2.5x5 mm pin and a...

This is the cover plate for the HPI Nitro Star F4.1 engine.Features: Constructed of aluminumIncludes: Cover Plate for the HPI Nitro Star F4.1 engin...

HPI Racing underhead for the Nitro Star is constructed of aluminum. Specs: Diameter: 33.8mm (1.33")Thickness: 7mm (0.276") Requires: HPI Nitro Sta...

HPI cap head screws are constructed of black steel, with a 2.5mm hex socket. Specs: Length: .62" (16mm)Diameter: .13" (3.5mm)

This is the HPI Crankcase Plug for the GT15C 15cc Engine used in the Savage XL Octane.Features: Silver/grey colored Made of tough aluminum Fits int...

This is the HPI Connecting Rod for the GT15C 15cc Engine used in the Savage XL Octane.Features: Silver/grey colored Made of aluminum Steel roller b...

This is the HPI Ignition System for the Savage XL Octane.Features: Replacement for worn or damaged ignition systems For the Savage XL Octane Incl...

This is the HPI Heatsink Head for the GT15C 15cc Engine used in the Savage XL Octane.Features: Silver/grey colored Eleven cooling fins Made of alum...

This is the HPI Crankshaft for the GT15C 15cc Engine used in the Savage XL Octane.Features: Silver/grey colored Made of steel For the GT15C 15cc En...