Show Discontinued Kits


Composite Slide Carb./Aluminum Heat Sink Head/Rear Exhaust


Standard Parts | Optional Parts

Available now from HPI Racing is our Nitro Star S-25 engine! This powerful new engine has 20% more displacement than our Nitro Star 21BB engine!

The Nitro Star S-25 is a .25 cubic inch (4.1cc) big block engine that features a machined billet aluminum heatsink head for extra cooling, dual bushing aluminum connecting rod, true ABC chrome sleeve construction for durability, and a simplified dual needle 7mm slide carburetor for easier tuning with a composite body for better performance at higher temperatures.

Please see our Roto Start Compatibility Guide to find the right Roto Start system for this engine.

The affairs, business and property of Hobby Products International Europe Limited are being managed by Eddie Williams and Nick Wood, appointed as Joint Administrators on 14 January 2016.

The Joint Administrators act as agent of the company without personal liability.

Eddie Williams is authorised by the ICAEW to act as an insolvency practitioner and Nick Wood is authorised by the IPA to act as an insolvency practitioner.

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