O.S. R21 Hasi Tuned 3.5cc Nitro GT engine juillet 19, 2021 by Chris Leave a Comment Coming from the Hasi Tuned is a new O.S. R21 GT based Nitro engine intended for the use with 1/8th GT cars. The power plant is professionally tuned, and offering a differently timed crankshaft, a modified case and sleeve. The specifications aim to increase end speed on, giving extra power over the whole RPM range, with special focun on fuel consuption. The easily recognisable engines come with a modified cooling and personalized modified parts. For better solution you can have pre-run-in in order to offer instant and exceptional performance on the track. The O.S. R21 Hasi Tuned 3.5cc Nitro GT engine is available separately or as combo including the T-2060SC and MB01-70 (M2003SC) exhaust system. Source: Hasi Tuned PartagezTweetezEnregistrer0 PartagesAbout ChrisFounder of circusrc.com, journalist & photographer in the RC world for several years, Chris is passionate about RC, racing and technique. Whether in France or in the world, he is trying to bring high-quality information and photos for enthusiasts... and make you want to join the world of RC!