OS Engines Speed R21 Euro II .21 Nitro On Road Engine OSM1DR00 ignite 6 x 2 Shock Pistons

6 x 2 Shock Pistons ( Xray XB4 /XB2C 2018)

3 Front Shock Tower

Consists of 4 springs to make the servo saver strong enough to prevent extreme steering deflection from impacts

Input Connectors

4712978-48093 Lightning FXM Titanium Hex Socket Screw Set

OS Engines Speed R21 Euro II .21 Nitro On Road Engine OSM1DR00 ignite 6 x 2 Shock PistonsO. S. Speed have introduced their updated R21 Euro 1 8th onroad engine with the release of the Euro II. Based on their successful Euro motor released three years ago, the engine sports a host of updates starting with the new crankshaft. To obtain more power the balance of the crankshaft was updated and now sports 3 tungsten counter weights, giving an improvement in the mid range. Another effect of this change is the return to idle has been improved.