- Data Sheet
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For those of you who want MORE - the Polini Big Evo 96cc Tuning Kit MBK Nitro / Aeroxfor a fantastic price!
The kit contains a Polini Big Evo 94cc Cylinder and an MXS Racing GP Crankshaft (45mm stroke / 90mm conrod), a combination which will get your engine up to 96cc. The kit includes:
The addition of the MXS crankshaft with a 45mm stroke (instead of 44mm) will get the Big Evolution cylinder's displacement up to 96cc turning it into one of the largest cylinders for MBK Nitro and Yamaha Aerox on the market.
It has a 90mm connecting rod for improved power transmission to the crankshaft and consequently improved performance.
With the right components (30mm carburetor, Hyper Racing exhaust and digital ignition) the kit can easily get more than 26hp!
You'll have to mill in the crankcase to make room for the cylinder base (d = 57.2mm +/-0.1mm, depth = 20mm) and the crankshaft (d = 77mm); manual is included.
Note: You'll have to adjust squish clearance when installing the kit as the crankshaft has a 45mm stroke and a 90mm connecting rod.
Name Polini Tuning Kit "Big Evo" 96cc Yamaha Aerox / MBK Nitro Item No. MS-PKMBIGEVO96 Brand MXS Custom Homologation No Displacement 95cc Stroke 45 mm Conrod Length 90 mm Product Line Hyper racing Material Aluminium Engine Type 2-stroke Cooling Type LC Bore 52 mm Piston Pin 13 mm Number of Piston Rings 1 Cylinder Head Included
Your product goes with the following manufacturers and their models:
Adly (Her Chee)
AirTech 50cc LC
Area 51 LC
Gulliver 50cc LC
Rally 50cc LC
SR 50cc LC (1994 - 1997) - Minarelli horiz.
SR 50cc Netscaper LC - Minarelli horiz.
SR 50cc Racing LC (before 2000) Minarelli
SR 50cc Stealth LC - Minarelli horiz.
Sonic 50cc LC
491 50cc RR LC (before 2003) - Minarelli horiz.
491 50cc RR Replica LC (before 2003) - Minarelli horiz.
491 50cc ST LC (before 2003) - Minarelli horiz.
491 50cc Sport LC (before 2003) - Minarelli horiz.
K2 50cc LC - Minarelli horiz.
Ark 50cc LC - Minarelli horiz.
Eikon 50cc LC - Minarelli horiz.
GTR 50cc LC - Minarelli horiz.
GSP 50cc LC
Dragster 50cc LC
Ark 50cc LC
Galactica 3.0 50cc LC
Speedjet 50 LC 2-stroke
MachG 50cc CAT LC (after 2003)
MachG 50cc LC (before 2003)
Nitro 50cc CAT LC (after 2003)
Nitro 50cc LC (after 1999)
Nitro 50cc LC (after 2013)
Nitro 50cc LC (before 1999)
Nitro Naked 50cc LC
Nitro Naked 50cc LC (after 2013)
F12 Phantom 50cc LC
F12 Phantom 50cc LC (after 2004)
F12 Phantom R 50cc LC
F15 Firefox 50cc LC
F15 Firefox 50cc LC (after 2004)
Crogen RS 50cc LC 2-stroke
Magnet RS 50cc LC 2-stroke
Speedjet RS 50cc LC
Aerox 50cc LC (after 1999)
Aerox 50cc LC (before 1999)
Aerox 50cc LC CAT (after 2003)
Aerox Naked 50cc LC (after 2013)
Aerox Naked 50cc LC CAT (after 2003)
Aerox R 50cc LC (after 2013)
Jog RR 50cc LC (before 2003)
Jog RR 50cc LC CAT (after 2003)
MXS RacingIn Stock - Same Day Dispatch for orders placed before 2pm.MXS Racing Cylinder Spacer MBK Nitro / Aerox 5mm for the MXS GP90 cylinder.This cylinder spacer allows mounting a crankshaft with a longer connecting rod.Thickness: 5mmCylinder Diameter: 58mmNote: The MXS Racing Spacer MBK Nitro / Aerox comes without bolts! Learn More
MXS RacingIn Stock - Same Day Dispatch for orders placed before 2pm.Straight out of our very own MXS Racing engineering department - MXS Racing Crankshaft "GP" MBK Nitro / Aerox with 45mm stroke, available here at Maxiscoot for an excellent price! This engineering masterpiece was specifically developed for our MXS GP cylinders and is clearly a high-end "Hyper Racing" part. The use of top quality materials, notably HQ Tungsten counterweights, and excellent balancing are among its stand-out features. And we did not stop here - the 90mm connecting rod (10mm longer than original) is forged out of HQ steel, CNC machine-finished and then TiN-coated. It comes with a reinforced silver-plated small end bearing (12x17x16mm). As a final touch, the "MXS Racing" logo and the serial number of the crankshaft are lasered onto one of the crankwebs. As it has a 46mm stroke, you'll have to mill in the crankcase of your Minarelli horizonta to make room for the connecting rod (77mm); instructions can be found in manual. Variator-side spline diameter is standard 13mm and compatible with most variators on the market. For Minarelli horizontal / 45mm stroke - 90mm connecting rod - 12mm piston pin - 12x17x16mm small end bearing. Learn More
PoliniIn Stock - Same Day Dispatch for orders placed before 2pm.Polini 94cc Cylinder Kit Evolution 2010 MBK Nitro / Aerox, 44mm stroke, (Minarelli horizontal LC, 13mm), the most powerful "Big Evo 2010" cylinder kit by Polini, available @ Maxiscoot! The kit includes: 94cc Aluminium Cylinder “Evolution 2010”, d = 52mm / conrod = 85mm, with 6 transfer ports and a bridged exhaust port Single-Ring Piston, 13mm pin, d = 52mm (for small end bearing 13x17x17.7mm) High-Compression Monobloc Cylinder Head “Evo 2010” Gasket Kit for mounting and adjusting squish Technically speaking, the Polini 94cc Cylinder Kit Evolution 2010 MBK Nitro / Aerox is a Nikasil-plated aluminium cylinder with 6 transfer ports and a divided, bridged exhaust port (new shape). It comes with a top quality one-ring piston (d = 52mm, 13mm piston pin) and a special monobloc cylinder head. This kit is the biggest cylinder kit for scooters available at the moment, with a 52mm piston and a 44mm stroke, it ends up having 94cc displacement giving it a lot of torque. The kit falls into the "Hyper Racing" category and can reach between 23 and 25hp, provided that it is combined with the right components (Polini exhaust "Evo 94cc" or Roost exhaust BE94 and a 28-34mm carburetor). Note 1: The exhaust flange has a different angle than the original (Piaggio flat type) and can only be used with a Polini Big Evo 94cc exhaust (same series) or a Roost BE94 exhaust. Note 2: This kit can only be mounted with crankshafts that have a 85mm connecting rod, 44mm stroke and a 13mm pin (small end bearing 13x17x17.7mm), and you'll have to mill in the crankcase to make room for crankshaft and cylinder base. Learn More