Here is the most powerful model of the Polini “Big Evo 2010” series, the Polini 94cc “Evolution 2010” cylinder head kit 44mm stroke MBK Nitro / Aerox (Minarelli horizontal LC, 44mm stroke and 13mm axle), available now !

This kit contains the following spare parts:

• “Evolution 2010” 94cc aluminum cylinder, 52mm diameter/44mm stroke/85mm connecting rod, with 6 transfer ports and two-part “bar” exhaust
• Single segment piston, 13mm shaft, 52mm diameter (for 13x17x17.7mm needle cage)
• High compression monoblock cylinder head “Evo 2010”.
• Kit of joints needed for assembly and adjustment of the “squish”

Technically, this Polini 94cc "Evolution 2010" 44mm stroke MBK Nitro / Aerox cylinder head is made of 6-port aluminum (nikasil treated), with a two-piece "bar" exhaust port (new shape). It comes with a high-quality single-segment piston (52mm diameter and 13mm axis) and a specific one-piece cylinder head .

This Polini 94cc "Evolution 2010" 44mm stroke MBK Nitro / Aerox cylinder head is currently the "largest" on the scooter market since it has a 52mm diameter piston on a 44mm stroke, or a real displacement of 94cc! A lot of torque for its displacement, it is classified in the "Hyper Racing" category and can develop approximately 23-25hp with the appropriate configuration (Polini "Evo 94cc" or "Roost BE94" exhaust and 28-34mm carburetor).

Attention : the exhaust joint exit angle is not the same as the original (flat exit "Piaggio type") and therefore can only be mounted with the Polini “94cc” Evo 2010 exhaust of the same series or Roost Pentola “BE94” .

IMPORTANT: This kit is only intended for mounting on 44mm racing crankshafts and 85mm connecting rod/13mm axle (13x17x17.7mm needle cage), you will also need to mill the crankcase to accommodate the crankshaft weights and cylinder foot!

SPARE PARTS LIST:

204.0935 COMPLETE PISTON KIT A/B/C/D D.52.mm PIN 13mm
206.0355 PISTON RING
272.0013 ROLLER CAGE pin 13mm
209.0465 CRANKCASE GASKET KIT
251.0033 HEAD GASKET KIT
311.0112 HEAD WATER PIPE CONNECTION KIT
317.0108 KIT OF 4 STUDS AND BOLTS
252.0011 EXHAUST SEAL
Compatibility Table

MINARELLI HORIZONTAL H2O
BENELLI 491 50 RR, RACING, SP, SPORT
YAMAHA AEROX 50 2T H2O
YAMAHA AEROX 50 2T H2O from 2004->
APRILIA AREA 51
BETA ARK 50 LC, K SERIES
ITALJET DRAGSTER 50 LC
BETA EIKON 50
MALAGUTI F 12 50 PHANTOM LC
MALAGUTI F 15 50 H2O FIREFOX
YAMAHA JOG 50 LC RR
BENELLI K2 50 LIQUID COOLED
MBK NITRO 50 H2O
MBK NITRO 50 H2O from 1996->
APRILIA RALLY 50 LC
APRILIA SONIC 50 GP (CY)
APRILIA SR 50 2T LC STEALTH, RACING, NETSCAPER
APRILIA SR 50 2T mod.94, 95, 96 H2O
APRILIA SR 50 2T WWW
MALAGUTI F12 R LC 50 2T LC euro 2
MBK MACH G 50 2T LC
MBK NITRO 50 2T LC
YAMAHA AEROX 50 2T LC euro 0-1
YAMAHA AEROX 50 2T LC euro 2
YAMAHA JOG RR 50 2T LC euro 2
APRILIA AREA 51 50 2T LC
APRILIA GULLIVER 50 2T LC
APRILIA SR NETSCAPER 50 2T LC (MINARELLI)
APRILIA SR RACING 50 2T LC (MINARELLI)
APRILIA RALLY 50 LC
APRILIA SONIC 50 2T LC
APRILIA SR REPLICA 50 2T LC <-1999 APRILIA SR STEALTH 50 2T LC (MINARELLI) BENELLI 491 SPORT 50 2T LC (MINARELLI) BENELLI K2 50 LC (MINARELLI) BETA EIKON 50 2T LC BETA ARK 50 LC DRR DRX 90 2T LC ITALJET DRAGSTER 50 2T LC MALAGUTI F15 FIREFOX 50 2T LC MALAGUTI F12 PHANTOM 50 2T LC MALAGUTI F12 PHANTOM 50 2T LC euro 2 MALAGUTI F12 PHANTOM 50 2T LC MALAGUTI F12 R LC 50 2T LC euro 2 MBK MACH G 50 2T LC MBK NITRO 50 2T LC YAMAHA AEROX 50 2T LC euro 0-1 YAMAHA AEROX 50 2T LC euro 2 YAMAHA JOG RR 50 2T LC euro 2 BETA EIKON 50 MALAGUTI F 12 50 PHANTOM LC MALAGUTI F 15 50 H2O FIREFOX YAMAHA JOG 50 LC RR BENELLI K2 50 LIQUID COOLED MBK NITRO 50 H2O MBK NITRO 50 H2O from 1996->
APRILIA RALLY 50 LC
APRILIA SONIC 50 GP (CY)
APRILIA SR 50 2T LC STEALTH, RACING, NETSCAPER
APRILIA SR 50 2T mod.94, 95, 96 H2O
APRILIA SR 50 2T WWW