Cylinder

Bore Ø 70 mm;
Stroke 48.6 mm;
Displacement 187.6;
Compression ratio 11.5:1.
Material: primary aluminium alloy with a high content of hardened and tempered silicon, cylinder liner with silicon carbide coating in a galvanic nickel die and crossed smoothing with two diamond passages with very limited tolerances.
Machining: on machine tools with high precision numerical control.
Cylinder-piston connection with an allowance of 0.05 mm.
Recalculated and upgraded heat exchange surfaces.


Piston

Ultra compact with 3 rings.
Material: special aluminium alloy with high silicon content, low thermal expansion and a tin facing on the sliding surfaces.
Machining on machine tools with numerical control.
Lightened and reinforced.
Upgraded heat exchange surfaces.


Piston rings

Special rings with high sliding ease and very high mechanical resistance.
I° ring compression in nitrided and chromium steel.
II° special cast iron ring.
Three - piece scraper ring made of chromiumplated special steel alloy.
APRILIAAPRILIA MOJITO RY 125 4T (LEADER)
APRILIAAPRILIA SPORTCITY ONE 125 4T (LEADER M38AM)
APRILIAAPRILIA SR MOTARD 125 4T euro 3
BENELLIBENELLI ADIVA 125 4T (LEADER)
BENELLIBENELLI ADIVA 150 4T (LEADER)
DERBIDERBI BOULEVARD 125 4T (LEADER)
DERBIDERBI BOULEVARD 150 4T (LEADER)
DERBIDERBI VARIANT Sport 125 4T
ITALJETITALJET JET SET 125 4T (LEADER)
ITALJETITALJET JET SET 150 4T (LEADER)
ITALJETITALJET TORPEDO 125 4T (LEADER)
ITALJETITALJET TORPEDO 150 4T (LEADER)
PIAGGIOPIAGGIO FLY 125 4T euro 2-3 2006->2007 (LEADER M422M)
PIAGGIOPIAGGIO FLY 150 4T euro 2-3 2006->2007 (LEADER M422M)
PIAGGIOPIAGGIO LIBERTY - LIBERTY LE 125 4T euro 1-2 (LEADER)
PIAGGIOPIAGGIO LIBERTY - LIBERTY LE 150 4T euro 1-2 (LEADER)
PIAGGIOPIAGGIO LIBERTY 125 4T euro 3 (LEADER M389M)
PIAGGIOPIAGGIO LIBERTY 150 4T euro 3 2009->2013 (LEADER M672M)
PIAGGIOPIAGGIO LIBERTY S 125 4T euro 3 (LEADER M381M)
PIAGGIOPIAGGIO SKIPPER ST 125 4T (LEADER)
PIAGGIOPIAGGIO SKIPPER ST 150 4T (LEADER)
PIAGGIOPIAGGIO TYPHOON 125 4T euro 3 (LEADER M701M)
PIAGGIOPIAGGIO ZIP 125 4T (LEADER)
RENAULTRENAULT FULLTIME 125 4T (LEADER)
VESPAVESPA ET4 125 4T (LEADER)
VESPAVESPA ET4 150 4T (LEADER)
VESPAVESPA LX 125 4T euro 2 2006->2007 (LEADER M441M)
VESPAVESPA LX 150 4T (LEADER)
VESPAVESPA S 125 4T euro 3 2007->2001 (LEADER M444M)
VESPAVESPA S 150 4T euro 3 2007->2011 (LEADER M445M)