Attention unapproved part on road, reserved exclusively for tours, runs ...
Here is a kit totally out of the ordinary although it has already existed for a good number of years, this kit has never been copied or equaled in terms of engine displacement ... Indeed, with its diameter of 55mm mounted in the original race therefore 40mm, this kit offers no less real 94.61cc!
This kit is therefore fits all standard stroke crankshafts therefore race 40mm rod 90mm. Ideal for those who did not want to resize their housing for the passage of a crankshaft long race.
In addition to this, you need to know more about it.
PARMAKIT studied the part for a long time before taking it out, they certainly put a Ø55mm bore in this cylinder but the skirt thickness is still very correct from a solidity point of view (2.25mm thick). This large bore obviously requires a long stroke to speak ...
However d.55mm this kit is also available for short 46mm travel available from us!
The advantage of keeping a connecting rod in stroke 40 will therefore make it easier to reach very high speeds. The cylinder has been very worked, 6 intake transfers are present, two for the rear (we all know that the rear transfer is almost only used for valve activation and scanning ...), the laterals are therefore in number of 4 and they are very bulky, increased on the low front like most major brand hyper racing cylinders. Exhaust level, PARMAKIT has opted for the booster exhaust, it is the most adapted to the torque of the beast, a large very well designed booster exhaust is therefore on this cylinder. The piston is a true vertex in single thin segment (1mm) in order to release the high speed. It is a low domed piston crown.
This cast piston weighs 141 grams (complete with axle / segment / clips). For the cylinder head, the heat must be extracted from this thermal unit PARMAKIT has therefore opted for a cylinder head. Cylinder head stud machined in high-end aluminum, the chamber is a model very well suited to the piston / cylinder, its shape is hemispherical with a polished finish, the stud is entering in order to be sure that the alignment is always good to the tenth. The incoming stud also avoids breakage of cylinder head gaskets! The cylinder head cover is also very well designed and has excellent support! In short…
We could spend hours telling you about this pretty monster that the great PARMAKIT brought out to us, this kit has been really neat until the comma cut of the skirt for the improvement of the filling… The whole is really a quality set , neat, large study. We also greatly appreciated the well-defined diagrams related to the set.
We recommend this kit with: reinforced crankshaft, minimum 21mm carburetor and quality with valves / pipe ... reinforced bearings, good cooling, efficient lighting, well reinforced clutch, cold candle racing exhaust unbridled ...
The pack contains:
X1 cylinder head stud
X1 pack attached with 3 base gaskets for squish
X1 cylinder head cover
X1 cylinder 6 aluminum transfer nykasil d.55mm
X1 piston vertex d.55mm mono segment
X1 segment d.55mm X 1mm hard chrome domed
X1 piston pin 12mm X2 piston clips type crab
X1 notice
X1 sticker ...
Spare parts :
joint pack with 3 base gaskets for squish
cylinder head
vertex piston d.55mm mono segment
segment d.55mm X 1mm hard chrome domed
As an option we offer a stage 1 preparation, this preparation is a modification of the channels and the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the piston and the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
