this is what comes in the rtr, inexpensive

Mach 427 w/PS SG
The Mach 427 is the latest high-power engine from Dynamite.


In Stock: Illinois
In Stock: California

Retail: $209.99
MAP: $149.99

Product Number: DYN0895
-------------------------------------------------------------------------Features

4.27cc displacement
ABC piston/sleeve assembly
Dual-needle carb


Overview

This high tech power plant includes a dual needle carburetor and race proven porting for an excellent balance of torque and top speed. It also features a black case and oversized orange heat sink head to keep things cool. The Mach 427 can be dropped into just about any 1/8-scale truck or buggy for intense performance.