Show Discontinued Kits


For HPI Nitro Star K Series Pullstart Engines./Requires a 7.2V rechargeable "stick" battery pack and charger.

Discontinued, replacement part: #87148

Standard Parts

Available from HPI Racing is our Roto Start system for the HPI Nitro Star K 4.6 and K 4.6 HO engine for example in the Savage SS 4.6 monster truck! Savage SS 4.6 owners can upgrade from pullstart to an easy remote starting system!

The HPI Roto Start system replaces the Savage pullstarter with a durable metal gear backplate and a handheld shaft driven starter. Starting is as simple as pressing a button. Requires a 7.2v rechargeable "stick" battery pack and charger. Some disassembly of the Savage and engine is required to mount the Roto Start system. Complete instructions included. Standard 7.2v battery and charger required. For example see our #9014 or #9039 HPI Overnight Charger for 7.2v Ni-Cd Battery.

Kevin Murphy and Jason Maloney of CVR Global LLP and Kevin Brown of Kevin Brown Advisory Limited were appointed as Joint Administrators to manage the affairs, business, and assets of the Company on 1 April 2019.
All enquiries and correspondence should be addressed to the Joint Administrators at CVR Global LLP, 20 Furnival Street, London EC4A 1JQ or to Jake Beake at

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

All Licensed Insolvency Practitioners of the Administrators' firm are authorised in the UK by the Institute of Chartered Accountants in England and Wales.

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