Kit 80cc high engine Ø50mm MALOSSI MHR REPLICA aluminum DERBI euro 3 & 4

Not approved on public roads, only reserved for competition, does not respect the highway code in any way!

 

In the aluminum sport category we offer this MALOSSI MHR replica kit Ø50mm 80cc. This cylinder is the replica of the great MALOSSI MHR team! This model is certainly slightly less powerful but above all more torquey and solid! The MALOSSI MHR TEAM stud bolt has been replaced by a normal cylinder head, the combustion chamber is a frustoconical model with high compression microblasted finish.

 

 

The cylinder is like the MALOSSI MHR team, a diameter of 50mm which offers 76.57cc of displacement. This cylinder preserves the original base form, the transfers are 5 in number and they are relatively well worked (front angle under the exhaust for better scanning and more performance). The transfer channels are very studied, they do not require any preparation.

 

 

The exhaust is a model with boosters in order to preserve good solidity while opening the exhaust to the maximum in width. In order to slow down the race for more solidity, MALOSSI put a single segment piston, this segments is a high-end hard chrome domed 0.8mm models for less friction. Like all MHR pistons, the piston is a very high-end model, it has side grease nipples, it has a very high silicon content ...

 

 

This kit also offers you the possibility of reconnecting the original carburetor antifreeze, this is obviously not mandatory. To conclude, this kit is an extremely powerful model but above all very solid especially with the treatment and the MALOSSI MHR bore which are of the most upscale in the world! Whether for endurance, the stunt ... this kit will not disappoint! Ultra torquey, it also preserves very good high speeds!

 

 

We recommend accompanying this kit with at least : racing exhaust, 21mm carburetion, unbridled ignition, reinforced crankshaft, reinforced bearings, hard clutch springs ...

 

 

Recommended squish: 0.80mm
Segment cutting clearance: 0.18mm
Compression ratio: 1: 13.8
Cylinder Ø: 50mm
For stroke: standard 40mm
Actual displacement: 78.53cc

Power advertised: 22hp at 12,000 rpm with the MHR configuration

 

The pack contains :

MALOSSI MHR team replica cylinder Ø50mm 5 transfers
Piston Ø50mm mono-segment 0.8mm
1 segment Ø50mm X 0.8mm

4 reinforced studs

4 stud nuts

Reinforced Ø12mm needle cage
Ø12mm treated reinforced piston pin
Piston clips in C Ø12mm
Plug for carburettor antifreeze on cylinder head
Cylinder head high compression Ø50mm normal replica
Complete seal pack
Explanatory / guaranteed booklet

stickers

 

Mounts on:

Aprilia RS after 2006

APRILIA Rx after 2007

DERBI senda DRD pro R

DERBi Senda DRD Pro Sm

DERBI Senda EVOR Sm

DERBI Gpr NUDE after 2006

DERBI Gpr RACING after 2006

DERBI Senda X-RACE R X-RACE Sm

DERBI Senda X-TREME R X-TREME Sm

GILERA Rcr Smt

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!