Attention, part not approved on the road, reserved exclusively for circuits, runs ...
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Here is a totally exceptional kit, 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 and its crankshaft stroke of 46mm, this kit offers no less than 109.28cc real! This model is for 90mm connecting rod (also available for 85mm connecting rod).
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The 90mm connecting rod offers less pre compression because the piston / cylinder is located 5mm further from the lower engine compared to the 85mm connecting rod model. Which is not a bad thing because to make good use of this type of cylinder, the volume of the lower engine must be very high compared to a 50cc for example. In addition, the throttle path is also shorter on the 90mm connecting rod model than on the 85mm connecting rod model. This 90mm rod model will release slightly more high speed (less rod forcing).
In addition to this, you need to know more about it.
In addition to this, you need to know more about it.
The 90mm connecting rod also makes it possible to reduce the acceleration speed of the piston (modification of the motor movement). This cylinder being delivered with a 5mm shim, you can simply go back to an 85mm connecting rod / 46mm stroke by not mounting this shim. The assembly is completely possible on minarelli am6 but be careful, you will still need tools and a good base of mechanical knowledge!
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Machining to pass the compulsory cylinder base, to pass the crankshaft as well, compulsory engine preparation in order to align ... The assembly will not be a simple assembly of parts but really a complex job that must be done properly. 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 this d.55mm kit also exists for short 39mm stroke!
In addition to this, you need to know more about it.
In addition to this, you need to know more about it.
Despite the 46mm stroke planned for this cylinder, we are moving away greatly from the so-called square motor! Very high speeds cannot therefore be reached even with the 90mm connecting rod, we will play on the torque to the extreme. The cylinder has been very worked, 5 intake transfers are present, only one for the rear (we all know that the rear transfer is almost only used for valve activation and scanning ...), the sides are therefore at the 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 piston with a low domed cap.
In addition to this, you need to know more about it.
In addition to this, you need to know more about it.
This cast piston weighs 141 grams (complete with axle / segment / clips). For the cylinder head, it is necessary to extract the heat from this thermal unit (especially given the 46mm stroke which further increases the heating) PARMAKIT therefore opted for a stud 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.
In addition to this, you need to know more about it.
In addition to this, you need to know more about it.
The incoming stud also avoids breakage of cylinder head gaskets! The cylinder head cover is also very well designed and has excellent support! Anyway… We could spend hours talking to you about this pretty monster that the great PARMAKIT brought out to us, this kit has really been taken care of up to the comma cut of the skirt for the improvement of the filling… The whole is really a whole of quality, neat, of great study. We will only have 2 small complaints to make, the exhaust outlet remains in Ø28mm, however, a large minimum Ø34mm would be mandatory to install the adequate exhaust ...
In addition to this, you need to know more about it.
In addition to this, you need to know more about it.
For example the BIDALOT FFM packs and other 86cc aluminum TPRs which already go to Ø32mm. This small complaint will not stop the good trainer who will know how to talk about this kit ... We also greatly appreciated the well-defined diagrams in relation to the whole.
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We recommend this kit with : PARMAKIT crankshaft 46mm stroke 12mm axis 90mm rod , 28mm minimum and quality carburetion with valves / pipe… Reinforced bearings, good cooling, complete preparation, efficient ignition, well reinforced clutch, cold spark plug, exhaust to be defined…
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The pack contains :
X1 cylinder head stud
X1 pack attached with 3 base gaskets for squish
X1 cylinder head cover
X1 cylinder 5 aluminum transfer nykasil d.55mm for 90mm rod 46mm stroke
X1 5mm shim for 90mm connecting rod passage
X1 vertex piston d.55mm mono segment
X1 segment d.55mm X 1mm hard chrome domed
X1 piston pin 12mm
X2 crab type piston clips
X1 notice
X1 sticker
...
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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
5mm thick base wedge
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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!
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This high engine is mounted on the following 50cc motorcycles with gearboxes equipped with the MINARELLI AM3, AM4, AM5, AM6 euro 1, AM6 euro 2 engine:
-APRILIA RS AM6 engine from 1997 to 2006 (after 2006, beware of engines passed in DERBI euro 3)
-APRILIA RX AM6 engine (after 2006, beware of engines passed in DERBI euro 3)
-APRILIA MX AM6 engine (after 2006, beware of engines passed in DERBI euro 3)
-BETA CRE
-BETA RR
-BETA RR ALU
-HONDA HM
-HONDA CRE
-HONDA BAJA
-HUSQUVARNA WXE
-HUSQUVARNA CH
-HM DERAPAGE
-HM CRE
-MALAGUTI DRAKON
-MALAGUTI XTM
-MALAGUTI XSM
-FANTIC CABALLERO
- PEUGEOT XP6
- PEUGEOT XPS
- PEUGEOT XP STREET
- PEUGEOT XP STREET EVO
- PEUGEOT XR6
- PEUGEOT XR7
-MOTORHISPANIA RYZ
-MOTORHISPANIA RX-R
-MOTORHISPANIA RX
-RIEJU RS1
-RIEJU RS2
-RIEJU RS2 MATRIX
-RIEJU RS2 MATRIX PRO
-RIEJU SMX
-RIEJU MRX
-RIEJU SPIKE
-KEEWAY TX EN
-YAMAHA DT
-MBK X-LIMIT
-YAMAHA TZR
-MBK X-POWER
-SHERCO SM
-SHERCO ENDURO
-SHERCO HRD
-SHERCO ENDURO
And many other machines!
