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The only big diameter kit available on the market in luxury version SUPERCROSS CPI SUPERMOTO, SM, SMX ... Ideal to speak your bike 50cc CPI! This version is in mono-segment and has a high quality piston VERTEX!
Caution, do not respect the required displacement, for competition on the track, road closed ... run!
Here the kit 80cc single-luxury segment of the Spanish house AIRSAL, this kit is also available in two-segment of 154 euros with us! This kit has certainly a cheap yet a good quality and present performance. Its diameter of 50mm still offers real 76,57cc combination of normal stroke of the engine so 39mm ICC. In relation to the two-segment model, it will offer more high speeds (it feels barely) and obviously less strength and less torque, the piston of the other model is a bi-VERTEX segment, it is also VERTEX but a single segment with side grease. 
The diagrams have a good ratio torque / high speed (around 187/131/130 °), coupled to this large diameter 50mm we recommend this cylinder with a good configuration anyway! A good racing exhaust, a 24mm minimum carburetion to operate well, a crankshaft and bearings reinforced ... The finish is really good for such a price. 
The piston is a model mono segment with chrome domed segment hard, it has side oilers. The cylinder head is a high-compression chamber is incoming to have good alignment chamber / cylinder and a good performance head gaskets. The room is a polished hemispheric model. This cylinder head allows you to reconnect if desired antifreeze on your carburetor. 
This cylinder comes with 2 joints of base plate to put the desired squish. Clearly this cylinder is really a superb quality / price / performance ratio! It will be certainly less effective than MALOSSI MHR, BIDALOT, or POLINI because its distribution, its canals, the study, the venturi exhaust ... are relatively limited, it is a al'identique nykasil scanimet, has the incomparable nykasil hard ceramic or plasma! But there will already very efficient, especially for those who do not want a kit complex and difficult to talk. A good trainer will also draw quite astounding performance. 
We recommend at least: 24mm carburetor with prepa boite a air + slices valves 0.30mm / 0.35mm, exhaust racing pot, crankshaft and bearings reinforced, cold candle racing ...
The pack contains:
Fitting with washer for taking anti gel
Pack complete joint with 2 base gaskets for the squish
Racing aluminum cylinder 5 exhaust transfers has bar
VERTEX piston mono-segment
Chrome domed segment
notice
Breech incoming high compression chamber
2 clips piston C
Ø12mm piston pin 
Optional we offer a preparation course 1, this preparation is a modification of the channels and the exhaust port by increasing the charts and improvement of the duct, it increases the cylinder performance. Improved piston and bottom skirt is also included in the amendment. Allow a little extra time for this preparation!
Mounts on single 50cc CPI (am6 ty)
CPI SM
CPI SUPERMOTO
CPI Supercross
SMX ICC
...
Reference: 04301050
A high compression entering stud bolt of excellent quality.
Reference: 06301050
A high quality VERTEX replacement piston to be changed every 7,000 km.
Reference: 11301050 - 11137550 - 11135850 - 11087650 ...
A good quality segment. Ideal in case of loss of compression on your Ø50 mm cylinder ICC.
Reference: 9924130
A high-performance aluminum engine kit 80cc in diameter 50mm, large exhaust, 5 transfers.
Reference: 01134950
A large diameter 50mm aluminum at a low price! This AIRSAL luxury version 80cc offers a lot of torque to the engine minarelli am6, compared to the original version, it has a piston high-end segment!
Reference: 53440.00
The biggest market kit for MINARELLI AM6 engine !!! A big Ø55mm diameter, 39mm in race to pose with a home run! A true torque monster.
Reference: 9919250
In the same type as the DR RACING, Powerful, solid, inexpensive, ideal to start a good little configuration on the am6 engine with the very famous black TOP PERFORMANCES .
Reference: 01139150
A high performance ultra racing engine, all at a reasonable price. In addition to this, you need to know more about it.
Reference: P400130100007
A very solid, rare and efficient kit taken from the mold of the famous ATHENA kit with exhaust valve!
Reference: H01138248
Solid, inexpensive, excellent torque-to-power ratio ...
Reference: 01131448
The cheapest aluminum cylinder made in Spain, the AIRSAL is of good quality and offers good performance for a reduced price.
Reference: 133.1009
The famous 80 large cast iron POLINI kit for the am6 engine.
Reference: EQ-715
The famous 7 Ø47mm cast iron transfers with oval exhaust for minarelli am6 engine, Sport 1 version with single monoblock cylinder head in frustoconical shape, thicker segmentation ....
Reference: 53430.00
One of the most powerful kits 80cc markets original race.
Reference: 075700
The ATHENA sport is certainly the best aluminum for a small budget, of very high quality, it is solid and very efficient! A perfect torque / power ratio.
Reference: 01133348
Stronger and torquey than the 48mm standard, made in spain, this AIRSAL also has better piston! Ideal for riding every day in a country or are allowed big kits!
Reference: 01301150
The only big diameter kit available on the market for CPI Supercross, Supermoto, SM, SMX ... Ideal to speak your bike 50cc CPI!
Reference: CK.44.748.GR1
GILARDONI cylinder 308 (oval exhaust) resistant aluminum with 6 transfers, VERTEX piston mono-segment, oval exhaust and improved cylinder head high compression mono block. A concentrate of performances.
Reference: 10059909
A high complete aluminum engine, efficient, solid and reliable, a real power monster little known to the general public.
The only big diameter kit available on the market in luxury version SUPERCROSS CPI SUPERMOTO, SM, SMX ... Ideal to speak your bike 50cc CPI! This version is in mono-segment and has a high quality piston VERTEX!
