You dreamed it, PARMAKIT did it!
The Italian firm specializing in very large diameter high engines has struck again! Here is the biggest kit ever made for MOTOBECANE AV10 / MBK 51 engine! This kit is complete and delivered with its red LIQUID high compression cylinder head!
With its enormous diameter of 50mm, it offers no less than 82.07cc with the original 41.8mm racing crankshaft (90cc with a long stroke 44.9mm RRD ), you will obviously have to machine your crankcases to pass it.
The aluminum cylinder has an oval exhaust and 6 intake transfers, the treatment is a nicasil. A habit at PARMAKIT . These diagrams remain higher than the other large diameter cylinders on the market for MBK 51 ( POLINI and MALOSSI do not have high diagrams either).
We will aim for a speed of around 10,000 rpm without engine preparation and around 11,500 with preparation. This will be the maximum to be found with this type of diameter on an original 41.8mm racing crankshaft. The piston is a mono-segment VERTEX model with side grease fittings.
Comes complete with a set of 4 extended studs.
The couple released is totally amazing and it is above all on this that we play. To make the beast speak well, an electronic ignition, a well-released exhaust, a 24mm carburetor (21mm large minimum) and an adapted variation are highly recommended. High quality reinforced crankshaft is mandatory!!! You will appreciate that it comes with 3 base gaskets to make your squish and an explanatory note.
The alloy of very good quality and the very massive cylinder head allow a good cooling!
As an option we offer you a stage 1 preparation, this preparation is a modification of the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the bottom of the skirt is also included in this modification. Count a little extra time for this preparation! We also offer you the special PARMAKIT casing for the Ø50mm!
