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MXS Cylinder Kit "GP90" stroke=45mm Yamaha Aerox / MBK Nitro
MXS Cylinder Kit "GP90" stroke=45mm Yamaha Aerox / MBK Nitro
MXS Racing Item no.: MXSGP008

MXS Cylinder Kit "GP90" stroke=45mm Yamaha Aerox / MBK Nitro

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IN STOCK, Dispatched same working day. For all orders to 2pm.

Only 5 left

Homologation: No
€385.00

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Description
Name MXS Cylinder Kit "GP90" stroke=45mm Yamaha Aerox / MBK Nitro
Item No. MXSGP008
Brand MXS Racing
Homologation No
Displacement 90cc
Stroke 45 mm
Conrod Length 90 mm
Product Line Hyper racing
Material Aluminium
Engine Type 2-stroke
Cooling Type LC
Bore 50 mm
Piston Pin 12 mm
Number of Piston Rings 1
Cylinder Head Included

Maxiscoot and MXS Racing proudly present the result of many years of development: the MXS 90cc Cylinder Kit GP2 (45mm stroke) MBK Nitro / Aerox! And, as a matter of course, to be had for a very good price!

The MXS 90cc Cylinder Kit GP2 (45mm stroke) has an original patented design and includes a 90cc cylinder (d=50mm / stroke=45mm / conrod 90mm => 88cc). These cylinder kits were developed for "Hyper Racing" and are, accordingly, extremely powerful!

Among the new developments for version GP2 - differently shaped exhaust ports and a newly designed combustion chamber for the cylinder head to boost the performance of the MXS cylinder kit even more. In combination with the right components, but without any additional modification, this kit can reach between 26 and 28hp. The special transfer port design will give you phenomenal torque of 18N·m - even in the low rpm range!

The MXS GP2 90cc cylinder is very powerful at take-off, has impressive acceleration and top speed. Thanks to well-thought-out design and the use of top quality materials this kit is also top-of-the line regarding reliability and durability (manufactured in Europe).

The kit has to be combined with the MXS crankshaft GP 45mm stroke (90mm conrod), the MXS exhaust GP90, a 30mm carburetor (38mm would be ideal), a racing clutch, an oversize variator, a "long" transmission and a digital inner rotor ignition (Stage6 R/T).

Note:

  • You'll have to mill in the front of your crankcase a little to make room for the connecting rod and the cylinder base (manual included)
  • It is possible to get even more power out of this kit by using a racing combustion chamber for the cylinder head that is sold separately (can only be run with high-octane fuel); the kit can now easily reach 28 / 29hp.

 

Improved Transfer Port Design

Forme des transferts optimiséeGas flow volume and speed depend on size and shape of the transfer ports which is usually limited by the stud bolts holding the cylinder in place. With the MXS GP90 90, this limitation was overcome by using a (patented) screw fastening instead of bolts; the transfer ports can now be shaped in the best possible way.
 

3-Part Exhaust Port

Conduit d’échappement en 3 partiesThe MXS GP90 90 has an exhaust port that is divided into 3 ducts, 2 of them usually called boost ports. This increases the port surface and gas emission significantly when compared to "normal" exhaust ports. The 2 bridges forming the boost ports reduce pressure on the piston ring and consequently ensure maximum reliability.
 

Elaborate Cooling System

Un refroidissement étudié avec minutieAn aluminium liner redirecting the flow of the liquid coolant leads to an optimum dissipation of the heat generated by the cylinder. Special attention was paid to the exhaust duct by designing a "water chamber" encircling it. The temperature of the exhaust gases is lowered, and performance consequently improved.
 

Special Combustion Chamber

Plot de culasse exclusifThe MXS GP90 90 cylinder kit includes a standard cylinder head combustion chamber offering a good compromise between acceleration and top speed. In order to increase power, the MXS Racing team developed a special racing combustion chamber for the cylinder head. To avoid rotation when tightening / loosening the spark plug, the cover was equipped with a pin to block it properly during installation.
 

Aluminium Cylinder Head Cover
Original CNC-Milled Design

Couvercle de culasse aluminium fraisé CNC totalement inéditPerfect finishing of even the smallest details thanks to a cylinder head cover cut from one piece and painted a beautiful anodized green. CNC-milling guarantees optimum results.
 

New Patented Fastening System

Système de fixation inédit brevetéThe fastening of the cylinder has been patented and allows for a change in the transfer ports' shape and size never accomplished before. This results in complete freedom in designing the cylinder canals.
 

 

Suitable for (38)

Your product goes with the following manufacturers and their models:



Aprilia
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


Benelli
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.


Beta
Ark 50cc LC - Minarelli horiz., Eikon 50cc LC - Minarelli horiz.


Italjet
Dragster 50cc LC


KTM
Ark 50cc LC


MBK
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)


Malaguti
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)


Yamaha
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)


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