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One of the rare competitors to match the TEAM MHR, this POLINI EVOLUTION offers a lot of torque and power, to be accompanied by a good configuration!
Not approved on the road! Reserved for competition.
Here is an excellent kit, very precise, sharp and powerful, of high fashion and top of the range although we would have preferred it delivered with a cylinder head cover considering the price… This cylinder head cover is not so important since it covers it - original DERBI cylinder head mounts without under top. We recommend it to those who really want the power and the fat preparation. It has a diameter of 50 millimeters, a very fine hard and domed chrome dual segment piston, this allows very high speeds while keeping an enormous torque, the piston also reinforced but cast not forged. 
The cylinder head stud is really very worked, high compression frustoconical chamber, polished and very efficient. This kit unfortunately comes with only one base gasket, so you will not be able to polish your squish, so we advise you to buy several base gasket of different thickness. The cylinder is cleanly bored aluminum in d.50mm treated nikasyl, has a large exhaust with boosters, 5 transfers of special size for the sides therefore provide an alignment, the skirt is cut gradually towards the rear in order to obtain optimal filling (profiled skirt system). 
It is quite discreet by its shape taken from the original DERBI EURO3 and 4 cylinder and its brilliant gray color. It is also delivered with 4 cylinder studs, enough to start on a very good high engine base. 
The pack consists of:
-1 polished truncated high compression chamber cylinder head stud d.50mm aluminum
-1 cylinder d.50mm aluminum / nikasyl 5 transfers exhaust with boosters
-1 piston bi segment with reinforcement bar
-1 axis original diameter reinforced anti-wear treatment
-2 reinforced axle rings (piston clips)
-1 complete seal pocket
-2 reinforced hard chrome domed segments
-4 cylinder studs
-guaranteed Polini
-Notice Polini in French / English / Italian
- polini stickers 
We recommend it with at least: 21mm minimum carburetion kit and 24 for good use / racing exhaust / reinforced crankshaft / reinforced bearings / cold competition spark plug / 100% quality synthetic oil
Specific References
Reference: 206.0327
The replacement segment Ø50mm by 1mm of thickness for kit 80cc cast iron and aluminum POLINI on DERBI, AM6 ...
Reference: 272.0001
The pistol type POLINI piston clips for your axis of 12mm, material diameter of 1mm!
Reference: 271.0006
The replacement piston pin for your large POLINI 12mm axis kit, ideal in case of wear or loss!
Reference: 204.0829/A
Ideal for the maintenance of your kit 80cc Ø50mm POLINI DERBI EURO 1, 2, 3 & 4
Reference: 211.0304
Ideal in case of crack, veiling, loss of compression of your high POLINI Evolution engine on DERBI EURO 3 and 4.
Reference: 01084248
A low-cost kit that does not neglect quality!
Reference: EQ-957-S
The racing version of the 80cc Ø50mm BARIKIT. Bi-segments with stud cylinder head.
Reference: 11000088
A reliable and efficient 70cc kit for derbi Euro 3 and 4!
Reference: CK.12.770.G1
High-end aluminum cylinder with 6 transfers, VERTEX single segment piston, large exhaust with boosters and cylinder head with high compression stud. A real concentrate of performance.
Reference: 3112988
The famous MHR TEAM 80cc for Derbi Euro 3 and 4, standard race and original size transfers of course ... But what power! What a couple and what solidity !! One of the best normal races on the market!
Reference: EQ-1032-S
The racing version of the 80cc Ø50mm BARIKIT BRK. Mono-segment with stud cylinder head.
Reference: EQ-976-S
The racing version of the 75cc Ø48mm BARIKIT. Mono-segment with stud cylinder head.
Reference: EQ-1031-S
The racing version of the 80cc Ø50mm BARIKIT BRK. Mono-segment.
Reference: EQ-749
The 70cc RACING version of BARIKIT, with exhaust with boosters and high diagrams! More powerful, but don't neglect the torque!
Reference: 9927020
A high performance, solid and reliable racing engine for derbi euro3. Kit with stud bolt.
Reference: 3113564
The famous MHR REPLICA TEAM 80cc for derbi, standard race and original size transfers of course ... But what power! What a couple and what solidity !! One of the best normal races on the market!
Reference: 11000688
A reliable and efficient kit in 70cc for derbi Euro 3, euro 4 and euro 5!
Reference: 3113221
The famous MHR REPLICA 80cc for derbi, standard race and original size transfers of course ... But what power! What a couple and what solidity !! One of the best normal races on the market!
Reference: 23172.00
The biggest high engine kit for DERBI Euro 3 and 4 !!! Ø55mm, in 40mm stroke so like the origin! A real couple monster.
Reference: CK.12.786.G
High-end aluminum cylinder with 6 transfers, VERTEX single segment piston, large exhaust with boosters and cylinder head with high compression stud. A real concentrate of performance.
Reference: 3112985
The famous MHR REPLICA 80cc bi-segment for DERBI, standard race, extraordinarily torquey and solid !! One of the best in normal racing on the market!
One of the rare competitors to match the TEAM MHR, this POLINI EVOLUTION offers a lot of torque and power, to be accompanied by a good configuration!
