Not homologated on public roads, only reserved for competition such as the MHR GP 80 and the super motorcycle trophy, the races for which this high engine was created.
Here is THE kit which made the reputation of MALOSSI at mécaboite level. The famous MALOSSI MHR TEAM which races in the CUP GP 80 MHR and SUPER MOTO MALOSSI trophy. This model is really special and reserved for an expert public, reserved for users who love quality, beautiful parts but above all extreme performance.
MALOSSI got everyone to agree by releasing one of the most powerful and torquey thermal groups on the market, all in standard 39mm stroke and with an original base…. (not even the need to align your housings). On this kit no enormous exhaust, extreme diagrams, gigantic transfers. Not fair, a heap of technicalities and extremely thorough studies!
This has been proven many times, this high engine can make you reach more than 20hp real (22hp at 12,000 revolutions per minute announced by MALOSSI MHR) with a quite breathtaking torque of 13kgm at 11,750 revolutions per minute. MALOSSI thanks to its design office, its technicians and its pilots have succeeded in really pushing the performance, the channels are very worked, each parameter is studied. We notice it directly, the cylinder has a boosters exhaust with a venturi perfectly designed for the rest of the MALOSSI MHR configuration namely MHR GP or SUPERMOTO exhaust and MALOSSI MHR round valve 26mm carburetion kit, the exhaust diagram is 190 °.
The nykasil is of very high quality, the intake diagrams are 129.5 °, the intake transfers are 5 in number. Remember that their shape is really perfect and the channels are identical. The cylinder head is a specific stud model, the assembly is therefore delivered with a set of 4 specific cylinder head studs and nuts.
The combustion chamber is a frustoconical model, the assembly offers a compression ratio of 1: 15.25 with a chamber volume of 5.40cm3 (squish recommended 0.50mm).
The piston is a top-of-the-range model with a high silicon content treated with a lug in the rear central passage… The high engine is delivered with a complete manual, a set of complete gasket with different thicknesses to make the squish… Clearly the most complete of the whole market!
We are far from the low-end small cylinders delivered naked in the cardboard box. Some would say that this cylinder is too expensive and that's it! The cnnaisseurs will simply say that it is the price to pay (special studs, nuts, very complete gaskets, a cylinder head cover,…. Studies on pushes that are paid.)
We recommend this kit with at least : reinforced crankshaft (the MALOSSI MHR is perfectly tuned and balanced to this kit), reinforced bearings recommended C3 clearance, racing exhaust (recommends MALOSSI MHR GP or SUPERMOTO 80), IW34 MHR spark plug, kit complete carburation MALOSSI with round bushel in Ø26mm, ignition according to the turns… PREMIUM, MHR or other…
Suggested retail price of this coin: 422.85 euros.
Notice
Recommended squish: 0.50mm
Segment cutting clearance: 0.15mm
Chamber volume 5.4cm3
Compression ratio: 1: 15.25
Cylinder Ø: 50mm
For stroke: standard 39.00mm
Actual displacement: 76.57cc
Power advertised: 22hp at 12,000 rpm with the MHR configuration
Announced torque: 13kgm at 11750 with the MHR configuration
The pack contains :
Complete gasket set
Set of 4 studs with nuts
Cylinder head cover
Cylinder head stud
Cylinder head screws with bleed ...
Cylinder 5 transfers exhaust to booster aluminum nykasil
Piston Ø50mm mono-segment
Segment Ø50mm X 0.80mm
Ø12mm axle
C clips
Exhaust wedge Ø28mm to Ø25mm
Notice
Stickers
….
Spare parts :
Piston
Segment
Clips
Axis + clips
Cylinder head cover
Cylinder head stud
Bolt set with purge
Set of studs + nuts
Complete seal kit
Cylinder + piston without cylinder head
Exhaust chock
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!
Mounts on 50cc motorcycles with gearbox equipped with the minarelli am3, am4, am5, am6 euro 1, am6 euro 2 engine :
APRILIA RS 50cc am6 engine from 1997 to 2006 (new attention after 2006 in derbi euro 3 engine)
APRILIA RX am6 engine (attention news after 2006 in derbi euro 3 engine)
APRILIA MX am6 engine (attention news after 2006 in derbi euro 3 engine)
APRILIA TUONO 50cc am6 engine from 1997 to 2006 (new attention after 2006 in derbi euro 3 engine)
BETA RR
BETA RR ALU
BETA CRE
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
MOTORHISPANIA RYZ
PEUGEOT XPS
PEUGEOT XP STREET
PEUGEOT XP STREET EVO
PEUGEOT XR6
MOTORHISPANIA RX
PEUGEOT XR7
MOTORHISPANIA RX-R
RIAJU RS1
RIEJU RS2
RIEJU RS2 MATRIX
RIEJU RS2 MATRIX PRO
RIEJU SMX
RIEJU MRX
RIEJU SPIKE
KEEWAY TX FR
YAMAHA DT
MBK X-LIMIT
YAMAHA TZR
MBK X-POWER
SHERCO SM
SHERCO ENDURO
SHERCO HRD
SHERCO ENDURO
And many other machines!
