Special price on existing stock only.

O.S. SPEED R21 'EURO SPEC' -  developed from the ultra succesfull 2102 & 2103. 

1/8th On Road Motor

It features a newly designed piston and liner developed for the 1/8th Euros 2018.... 
Two holes in the piston help reduce weight, improve cooling and gas flow. 

Displacement: 3.49cc(0.213cu.in.) 
Bore: 16.08mm (0.633in.) 
Stroke: 17.2mm (0.677in.) 
Practical rpm range: 4,000 - 45,000rpm 
Max. output: 2.8ps(2.76hp) 


YMC Tuning improves the 'Efficiency' of the motor even further. 
Better High End and Midrange Performance are some of the benefits. 
We can also offer a 'Pre-Run' service which helps shorten the running in period Dramatically'!