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WebshopVespa Smal...TuningRacing Cyl...Cylinder Head MALOSSI 136cc
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Cylinder Head MALOSSI 136cc

for MALOSSI MHR 136cc MHR
for Vespa 90-125/PV/ET3/PK/S
/XL/2
Ø 57,5 mm, short thread,
incl. O-ring

MALOSSI small frame tuning – the next generation! Close on the heels of the 136cc MK II cylinders release the Italians follow it up with the MALOSSI Hyper Racing (MHR) version of their smallframe mainstay. An aluminium cylinder, new barrel-mounted inlet manifold, bridged exhaust port, new piston equipped with just one piston ring and monster transfer ports you could lose things in! This version is MALOSSIs ticket to the premier direction of smallframe racing - Hyper Racing.

 

Similar to previous versions, this cylinder is compatible with all Vespa 50-125/PK50-125 models, with both conventional disc-valve or reed valve inlet manifold systems. To enable this a suitable inlet cover is included with the kit. To make use of the cylinder mounted reed-valve intake the manifold from the MK II cylinder can also be used. The mounting studs are identically spaced, although the cylinder itself will require slight modifications below the first cooling fin. Otherwise MALOSSI also produces suitable manifold for the 136cc MHR cylinder. The right angle at which the petals were positioned, in relation to the cylinder, has been changed to a slight angle. This allows a much improved gas flow (fluid dynamics) of the fuel charge mix.

 

Alongside the massively increased size of the transfer ports the port timings and inlet port angle have also been redesigned on the MK II version. The most noticeable novelty in the area of the exhaust outlet is the new bridged port design. The inlet port is divided into two stabilising the single-ringed piston in this area.

 

CONCLUSION: All in all an viably attractive cylinder kit with lots of tuning potential MALOSSI rate this cylinder with a power output of 25 PS at 11.000rpm. We, however, see this as a minimum figure with enormous room for a much increased power output with careful tuning. The overall quality of the materials used in its construction guarantee durability under heavy load.

 

Aluminium 57,5mm bore/6 transfer ports

Aluminium cylinder with a hard chrome lining, 51mm stroke, 6 transfer ports, reinforced piston with a single 1x1mm right angled piston ring, M6 sized exhaust studs, bridged inlet port, double bridged exhaust port, centralised cylinder head with an o-ring gasket and 12.5:1 compression, kit includes a gasket set and cylinder inlet cover.

 

SIP-TIP: The potential of this kit deserves its combination with a larger carburettor kit, new spark plug, racing crankshaft with a 20/20 or 24/24mm cone-stub dimensioning, performance exhaust, an electronic ignition system and a taller gearing (2.86-max.2.34). Take care to mount the piston ring with the lettering towards the pistons roof/crown. The increased size of the transfer ports requires the OE crank case to be modified, especially in the stator-plate mounting area. Our SIP standard crank cases also require this modification. All necessary instructions are included in the delivery.

 

 


OEM Numbers (for the purpose of comparison)  3816567 (MALOSSI)


Customers also searched for this article with:  cilinder head


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$61.70
Art.No.
38165670
974g / piece
Stock on hand   Amount

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fits on the following articles
divider Productname divider Art. No. divider Price divider Stock
Racing Cylinder MALOSSI MHR 136cc for Vespa 90-125/PV/ET3 /PK/S/XL/2, 31165660 $294.22
Racing Cylinder MALOSSI MHR 136cc for Vespa 90-125/PV/ET3 /PK/S/XL/2, 31158290 $347.88
icon scootermodels This product fits the following models
  PIAGGIO
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
PIAGGIO APE 50 50 TL1-2T 2T AC `69-`80 crankshaft with 51mm stroke necessary
PIAGGIO APE 50 FL / FL2 50 TL6T 2T AC `89- crankshaft with 51mm stroke necessary
PIAGGIO APE 50 FL3 50 TL5T 2T AC `96- crankshaft with 51mm stroke necessary
PIAGGIO APE 50 Mix 50 2T AC `99- crankshaft with 51mm stroke necessary
PIAGGIO APE P 50 ( Vespa Car ) 50 TL3T 2T AC `80- crankshaft with 51mm stroke necessary
PIAGGIO APE TM P 50 / Elestart 50 TL4T 2T AC `85- crankshaft with 51mm stroke necessary
  VESPA
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 50 / N 50 V5A1T 2T AC `63-`71 crankshaft with 51mm stroke necessary
VESPA 50 L 50 V5A1T 2T AC `66-70 crankshaft with 51mm stroke necessary
VESPA 50 R 50 V5A1T 2T AC `69-`83 crankshaft with 51mm stroke necessary
VESPA 50 Revival 50 V5R1T 2T AC `90- crankshaft with 51mm stroke necessary
VESPA 50 S 50 V5SA1T 2T AC `63-`84 crankshaft with 51mm stroke necessary
VESPA 50 Special 50 V5A2T 2T AC '69-'72 crankshaft with 51mm stroke necessary
VESPA 50 Special 50 V5B1T 2T AC '72-'75 crankshaft with 51mm stroke necessary
VESPA 50 Special 50 V5B3T 2T AC '75-'83 crankshaft with 51mm stroke necessary
VESPA 50 Special Elestart 50 V5B4T 2T AC '75-'76 crankshaft with 51mm stroke necessary
VESPA 50 Special Elestart 50 V5B2T 2T AC `72-`75 crankshaft with 51mm stroke necessary
VESPA 50 Special Elestart 50 V5A3T 2T AC '69-'72 crankshaft with 51mm stroke necessary
VESPA 50 SR / Sprinter 50 V5SS2T 2T AC `71-`79 crankshaft with 51mm stroke necessary
VESPA 50 SS / Super Sprint 50 V5SS1T 2T AC `65-`71 crankshaft with 51mm stroke necessary
VESPA 90 90 V9A1T 2T AC `63-`84
VESPA 90 Racer 90 V9SS2T 2T AC `71-`74
VESPA 90 SS Super Sprint 90 V9SS1T 2T AC `65-`71
VESPA 100 (UK) / 100 Sport (US) 100 V9B1T 2T AC `78-`90
VESPA 125 125 VMA1T 2T AC `65-`67
VESPA 125 Primavera 125 VMA2T 2T AC `67-`83
VESPA 125 Primavera ET3 125 VMB1T 2T AC `76-`90
VESPA PK 50 50 V5X1T 2T AC `82-`84 crankshaft with 51mm stroke necessary
VESPA PK 50 / S Automatica / Elestart 50 VA51T 2T AC `84-`86 crankshaft with 51mm stroke necessary
VESPA PK 50 S / Elestart 50 V5X2T 2T AC `82-`84 crankshaft with 51mm stroke necessary
VESPA PK 50 S Lusso / Elestart 50 V5X2T 2T AC `85-`88 crankshaft with 51mm stroke necessary
VESPA PK 50 SS / Elestart 50 V5S1T 2T AC `83-`86 crankshaft with 51mm stroke necessary
VESPA PK 50 XL / Elestart 50 V5X3T 2T AC `85-`90 crankshaft with 51mm stroke necessary
VESPA PK 50 XL FL 50 V5N1T 2T AC `90- crankshaft with 51mm stroke necessary
VESPA PK 50 XL HP 50 V5N2T 2T AC `91-`91 crankshaft with 51mm stroke necessary
VESPA PK 50 XL N NUOVA 50 V5X5T 2T AC `89-`90 crankshaft with 51mm stroke necessary
VESPA PK 50 XL Rush / Elestart 50 V5X4T 2T AC `88-`90 crankshaft with 51mm stroke necessary
VESPA PK 50 XL2 / Elestart 50 V5X3T 2T AC `90- crankshaft with 51mm stroke necessary
VESPA PK 50 XLS 50 V5S2 2T AC `86- crankshaft with 51mm stroke necessary
VESPA PK 80 S / Elestart 80 V8X5T 2T AC `82-`86
VESPA PK 80 S Lusso / Elestart 80 V8X5T 2T AC `85-`88
VESPA PK100 S / Elestart 100 V9X1T 2T AC `82-`84
VESPA PK100 XL 100 V9X2T 2T AC `86-`90
VESPA PK125 125 VMX1T 2T AC `82-`85
VESPA PK125 ETS / Elestart 125 VMS1T 2T AC `84-`85
VESPA PK125 N NUOVO (FL) 125 VMX7T 2T AC `90-`91
VESPA PK125 S / Elestart 125 VMX5T 2T AC `82-`84
VESPA PK125 XL / Elestart 125 VMX6T 2T AC `86-`90
VESPA PK125 XL2 125 VMX6T 2T AC `90-

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