High-end, completely worry-free set from tuning specialists Top Performances. Aluminium cylinder with extremely hard-chromed cylinder sleeve and large 50mm bore (for 86cc) and 44mm long stroke racing crank. The modular cylinder head ensures optimal flow of coolant through the cylinder head and thus perfect heat dissapation. Also contained in the kit is: a complete crank main bearing set, exhaust reducer piece for mounting to smaller exhaust manifold diameters, racing gudgeon pin and a racing offset alternator shim. This represents a saving over ordering these parts individually.
This kit does require slight modification to the crankcase. Please see the attached link and download the assembly instructions. - https://www.racing-planet.de/cylinder-kit-top-performances-racing-aluminum-incl-crankshaft-86cc-for-minarelli-am-p-234259-1.html

Mr. Cooper

 09/04/2016

Hi there, this is an early top end kit review.
i have just received the kit for my son`s bike.
I am a current Moto GP engineer, so i know what quality is, and i really like this kit!!!
the cylinder is cast really well, and the ports/timing are spot on.
the crank is super quality and well assembled.
The cylinder head, two piece!! is well thought about!
The kit is supplied with SKF crank Bearings, best bearings bar none, it speaks for its self.
Lots of nice touches, gaskets and exhaust spacers, O rings and much more.
TOP PERFORMANCE, be very proud of yourselves!!!!!!
I am just installing kit with my son, i expect the best from this big bore kit for the MONEY.
We will update when running!!!
only bad point, No base ball cap supplied as stated!!!! HA HA LOL, small bug bear. CHEERS
I would like to say thank you to RACING PLANET, FANTASTIC/SUPERB ADVICE AND SERVICE.