REDS Racing


	XR21 EVO Perfect torque

Features

Technical Specifications

XR21 EVO
1/8 off road

The XR21 is our off-road racing engine more powerful than ever. Guarantees high performance on all terrains. It is particularly suited for fast tracks. High reliability and ease of carburetion make it perfect for competitions.

Perfect torque
Thanks to the ABC cylinder configuration, 5 inlet ports and single exhaust port, the engine provides maximum torque at each rpm, and ensures low fuel consumption. This cylinder makes the engine suitable for every type of track.

Hybrid bearing technology
The engine comes with the steel-ceramic hybrid rear bearing. The ceramic balls combined with steel rings 100Cr6 ensure longer life and low friction at high temperatures.

Perfect balance
Our latest generation crankshaft is balanced with one high density weight. Silicone filling reduces the inertia to rotation. Through the use of special steel and heat treatment, the component is particularly strong and surprisingly reliable.

The New EVO carburetor
The new buggy carburetor is made with the new PEEK technology, a new insulating bushing that improves carburetion stability. The EVO is equipped with the new Extra Long minimum needle, which improves fuel economy and guarantees a linear power output.

Flat Piston
All our off-road engines use flat pistons matched to a specific combustion chamber for high performance and low consumption. Made from a high strength aluminium bar, our piston is a true masterpiece of engineering.

Ultra-light rod
Lightweight, durable and reliable, this is the standard quality of our connecting rod. The slim shape is designed to minimize aerodynamic friction. The double bush technology ensures high reliability.