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for 90cc

New R4 for BigBore engines 84-94 cc for motorcycles gears

The new R4 is the result of technological innovation and demand KIT YASUNI has received from customers participating in top category. The R4 covers the most demanding engine with the most demanding product, with the best features of the market, for  84-94 cc BigBores engines for gear motorcycle. Supplied with chassis exhaust anchors following the line of the Yasuni R3 and the only option is in "Black" aluminium with a laser-engraved logo. It comes with a light coat of oil, but without barnish, which can lead to premature corrosion if it is not kept clean and oiled, that in any case will erode performance.