O.S. SPEED R2106 is the factory tuned engine developed for 1/8 on-road racing competition. The new engine 9 port cylinder liner with re-designed port for more power. Also for great power feel from low end, we have adopted crankshaft from R21 Euro II and well received ceramic ball bearing from offroa..
Davide Ongaro, who won the IFMAR 1/8 Engine Off-Road World Championship, has signed with O.S. SPEED since 2021.This time, "O.S. SPEED B21 ONGARO EDITION", which has been modified according to his feeling, was born! Based on the latest off-road engine O.S. SPEED B2104, the crankshaft has been changed..
This is an optional O.S. Induction Silencer. This EFRA/IFMAR approved silencer was developed for .12 - .21 class on-road engines to help reduce noise levels, while at the same time having very little affect on power output.Includes:Upper and lower plastic cupsRubber base with foam elementZip tieInst..