Pg36_39_BIG BORE_100 - Malossi Performance Parts

CYLINDER KITS
BIG BORE Ø 50
The new BIG BORE Ø 50, stroke 39,2-39,3 and 44, cylinder kits comes from the technology of the famous Malossi 7 ports cylinders. They are designed
for both Minarelli and Piaggio engines.
All riders, thrilled about the news, wished to test them. The expectations were not disappointed : the power increase and the absolute reliability proved,
once again, the high quality of the products and Malossi professionalism.
Technical specifications:
- 7 ports cylinder, H2O, gravity melted in aluminium alloy, cylinder casing coated in cermetal, lapped with diamond tools
- Bore 50
- 1 ring, strengthen and rounded head piston
- KDN5 cast iron piston ring Ø 50 x 0.8
- Modular head in primary aluminium alloy, drained, with calculated and orientated convoying system of cooling circuit.
• Sometimes the picture might be different from the product which they refer, as concerns some details
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MHR TEAM CRANKSHAFTS stroke 44 mm
BIG BORE
Art. 5313270
Piaggio engines
Art. 5313275
Yamaha – Minarelli engines
( see table below )
Together with the new project of BIG BORE cylinder kits, Malossi has
designed a set of crankshafts with a high quality materials and a special
finishing degree.
The above mentioned Malossi crankshafts must be used only coupled with
Malossi BIG BORE cylinder kits.
Engine MINARELLI PIAGGIO
Cylinder kit 3113036 3113039 3113030 3113042
Capacity 77 cc 86,40 cc 77,15 cc 86,40 cc
Bore 50 mm 50 mm 50 mm 50 mm
Crankshaft MHR MHR TEAM MHR TEAM MHR MHR TEAM MHR TEAM
Crankshaft 53 8009 5312810 5313275 (•) 53 9212 53 9703 5313270 (•)
Stroke 39,2 mm 39,2 mm 44 mm 39,3 mm 39,3 mm 44 mm
Connecting rod lenght 80 mm 80 mm 85 mm 85 mm 85 mm 85 mm
Pair axis 16 mm 18 mm 18 mm 16 mm 18 mm 18 mm
Technical note: the above mentioned cylinder kits must be used only coupled with Malossi crankshafts.
ATTENTION: to grant the due stiffness to the cylinder kit, the cylinder has an introduction diameter into the crankcase of 56,2 -0,1/-0,2 mm. Therefore, it
is necessary to bore the crankcases with a boring bar of 56,7 + 0,0/0,1 mm for a depth of 21 mm.
(•) INTERVENTIONS ON THE CRANKCASE : BORING AND CONNECTING .
Art. 3113030
CYLINDER KIT Ø 50 alum. H2O 7T MHR BIG BORE
Art. 3113042
CYLINDER KIT Ø 50 alum. H2O 7T MHR BIG BORE (stroke 44 mm)
SCOOTER 50 2t LC
APRILIA SR 2004 carb. (PIAGGIO)
SR R carb ( PIAGGIO)
DERBI GP1
GP1 OPEN
GP1 REVOLUTION
GILERA DNA
RUNNER
RUNNER SP
PIAGGIO NRG
NRG EXTREME
NRG MC2
NRG MC3 DD
NRG Power DD
NTT
QUARTZ
ZIP SP
• Sometimes the picture might be different from the product which they refer, as concerns some details
Art. 3113036
CYLINDER KIT Ø 50 alum. H2O 7T MHR BIG BORE
Art. 3113039
CYLINDER KIT Ø 50 alum. H2O 7T MHR BIG BORE (stroke 44 mm)
SCOOTER 50 2t LC
APRILIA AREA 51
SONIC
SR NETSCAPER (MINARELLI)
SR RACING (MINARELLI)
SR REPLICA
SR STEALTH (MINARELLI)
BENELLI 491 SPORT
BETA EIKON
ITALJET
MALAGUTI
DRAGSTER
F12 - PHANTOM
F12 DIGIT KAT - PHANTOM
F12 DIGIT KAT - PHANTOM euro 2
F12 R LC euro 2
F15 FIREFOX
MBK MACH G
NITRO
YAMAHA AEROX euro 0-1-2
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MULTIVAR 2000 MHR TEAM
The new 2000 MHR TEAM Multivar is different from the previous one for the bigger hub
diameter which, passing from 20 to 22 mm, improves its smoothness, reducing frictions and
allowing a linearity of the change gear never reached before!
TECHNICAL NOTES :
The kit contains a 99.5 mm diameter mobile half pulley made of a special cast aluminium alloy.
The contact surface between pulley and belt is super-finished with a diamond tool to grant a
constant coefficient of friction, calculated to prevent both belt slip and premature wear.
To satisfy the innumerable adjustings required by racing scooters, depending on the track type
and on the tuning of the engines, the kit is supplied with 2 sets of 6 rollers and a counter-spring
in pre-hardened silicon-chrome steel alloy with counterclockwise winding (racing). In addition,
other springs of the same class with different loads are available as options.
Suggestions for the setting
The variator is supplied with two different roller sets: one of 3.9 gr. and one of 4.7 gr. in order
to change the number of revolutions of the gear curve of your vehicle perfectly adjusting its
speed and acceleration.
Art. 5112645
X KEVLAR belt
SCOOTER 50 2t (PIAGGIO) MULTIVAR 2000 MHR TEAM VENTILVAR
MHR TEAM ( O ) ( E )
APRILIA MOJITO CUSTOM 5112645 6113312 6113416B
SCARABEO STREET (PIAGGIO) 5112645 - 6113416B
SR 2004 carb (PIAGGIO) LC 5112645 6113312 6113416B
SR R carb (PIAGGIO) LC 5112645 6113312 6113416B
DERBI ATLANTIS - BULLET 5112645 6113312 6113416B
GP1 LC 5112645 6113312 6113416B
GP1 OPEN LC 5112645 6113312 6113416B
GP1 REVOLUTION LC 5112645 6113312 6113416B
GILERA DNA LC 5112645 - 6113416B
EASY MOVING 5112645 6112411 6113416B
ICE 5112645 6113312 6113416B
RUNNER LC 5112645 6113312 6113416B
RUNNER SP - LC 5112645 6113312 6113416B
STALKER 5112645 6113312 6113416B
STORM 5112645 6113312 6113416B
TYPHOON 5112645 6113312 6113416B
TYPHOON X 5112645 6113312 6113416B
ITALJET TORPEDO NEW 5112645 - 6113416B
PIAGGIO DIESIS 5112645 6113312 6113416B
FLY 5112645 6113312 6113416B
FREE 5112645 6113312 6113416B
LIBERTY 5112645 - 6113416B
NRG LC 5112645 6113312 6113416B
NRG EXTREME 5112645 6113312 6113416B
NRG EXTREME LC 5112645 6113312 6113416B
NRG MC2 - LC 5112645 6113312 6113416B
NRG MC3 DD LC 5112645 6113312 6113416B
NRG MC3 DT 5112645 6113312 6113416B
NRG Power DD LC 5112645 6113312 6113416B
NTT LC 5112645 6113312 6113416B
QUARTZ LC 5112645 6112411 6113416B
SFERA RESTYLING 5112645 6112411 6113416B
TYPHOON 2007-> - 5112645 6113312 6113416B
VESPA ET2 2000 - 5112645 6112411 6113416B
VESPA ET2 carb. 5112645 6112411 6113416B
VESPA LX 5112645 6112411 6113416B
VESPA S (C381M) euro 2 - 5112645 6112411 6113416B
ZIP 2000 - 5112645 6112411 6113416B
ZIP FAST RIDER 5112645 6112411 6113416B
ZIP SP - LC 5112645 6112411 6113416B
( O ) : OPTIONAL : ONLY for OVER RANGE .
( E ) : ELECTRIC STARTER IS CUT OUT .
• Sometimes the picture might be different from the product which they refer, as concerns some details
BELTS
The level of Malossi products is still growing and
the challenge that this company issued to
perfection does not know any break. Besides the
Special Belt and the Kevlar Belt, champions of
durability and performance, now Malossi
introduces two new players on the field: the
X Kevlar Belt and X Special Belt.
Malossi’s technical department wishes to thank
their fans who provide a fundamental incentive
to research and development.
Technical features:
1 POLYAMIDE FABRIC
2 CHLOROPRENE RUBBER-COATED FABRIC
3 CHLOROPRENE BEARING
4 KEVLAR ELEMENT
5 COMPOUND OF CHLOROPRENE
ELEMENT LOADED WITH FIBERS
6 POLYAMIDE FABRIC
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Art. 2013224
SPACER
Thanks to the big experience gained on racing circuits, Malossi can propose now a new
5 mm spacer, to be placed between the crankcase and the reed valve to improve the
performances of the vehicle.
APPLICATIONS:
all 50cc Minarelli and Yamaha horizontal engines
CARBURETTOR
KIT
VHST 28
ATTENTION:
Radical modifications to the plastic
frame are necessary to fit this
carburettor kit.
Art. 1613405
APPLICATIONS:
all 50cc Piaggio engines
• Sometimes the picture might be different from the product which they refer, as concerns some details
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