ROVAN 1/5 Desert Buggy 260S with 29cc Engine BAJAThe Baja 5B, simply the most popular 1/5 chassis to date. Compatible with 99% of the parts from the original HPI Baja 5B. Unlike the original, Rovan has pre-installed a 29cc 4-bolt petrol engine with a Dominator style tuned exhaust pipe for that extra power we're all looking for! On top of the power increase, Rovan made the drive shafts 33% larger, installed an aluminium clutch mount, steel roll cage, sway bars, MX rear tyres, NGK spark plug, Walbro carburetor and a 45kg steering servo!