Ripmax have just announced the launch of a new O.S. engine – the FSá-81 four-stroke. The FSá-81 is a direct replacement for the FS-70 Surpass II, offering greater power and throttle precision in a compact and lightweight design. The crankcase mounting dimensions allow the FSá-81 to slot into the same mount as an FS-70S II would for an instant power upgrade.
The new F-5030 silencer is "very effective", thanks to its internal baffle and carefully matched internal volumes and passages. The design allows a huge range of outlet positions to accommodate almost every model.
The latest 60RA carburettor now features a ‘constant velocity’ inlet for improved throttle response and reduced spitting.
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