Nitro Star F4.6 Engine P.Start With Air Cleaner & G.Plug (R5)
The F4.6 is the powerplant responsible for the immense speeds and raw torque in the Savage X 4.6, and now it's available to fit into any Savage or big-block monster truck! It features all the race tun

Nitro Star G3.0 Engine P.start, Rotary Carb, Side Exh
Pulverize the competition with this amazingly fast, durable and easy to adjust engine! Using the latest technology and construction techniques, this is the standard powerplant for the Firestorm stadiu

Nitro Star T3.0 Engine With Pullstart
Powering the RTR NITRO RS4 3 EVO+, the T3.0 is HPI's a fantastic engine for speed fanatics! With 3cc of displacement for an impressive 0.18 cubic inches, this is an easy upgrade for just about every o

Nitro Star K4.6 HO Engine with Pullstart
The HPI Nitro Star K4.6 HO engine is the high output (HO) version of the well known HPI Nitro Star K4.6 engine (#HP15201). The new high output version is optimized for higher revs and the use on tra

Nitro Star K4.6 Engine with Pullstart
Available from HPI Racing, the Nitro Star K4.6 engine, capable of propelling the Savage monster truck to speeds of 44 mph and wheelie off the line. The K4.6 is a 4.6cc (.28 cubic inch) big block engin

Nitro Star 18SS Engine with Pullstart
For a big boost in power upgrade to the HPI Nitro Star 18SS engine. Rated at 1.5 horsepower, the 18SS is a high torque engine with features that include aggressive porting, durable ABC construction, a

Nitro Star K5.9 Engine With Pullstart
Strap in the power! Get your Savage or Savage X up to ludicrous speed with the monster Nitro Star K5.9 engine! With nearly 4hp on tap and ground-tearing amounts of torque, there will be nothing you wo

Nitro Star F3.5 Engine With Pullstart
Give your Savage a boost with the Nitro Star F3.5 engine! This .21 cubic inch engine is 3.5cc of pure, massive muscle! With 2.5hp on tap, the rear-exhaust Nitro Star F3.5 is supremely powerful and is

N. Star F4.1 Engine Pullstart (Savage X etc.)
Big Block Power for big trucks! The HPI Nitro Star F4.1 is the next evolutionary step up from the proven HPI Nitro Star S25 engine. It features a new crankcase and upgrades to the cylinder, piston, co