Malossi 67mm Big Bore Kit for Aprilia Scarabeo Light, Dragster 200, Royal Alloy 200 and other 125-200cc scooters that use the same engine. 

Technical features

Cylinder

125 cc:
Bore: Ø 67 mm
Stroke: 47 mm
Displacement: 166
200 cc:
Bore: Ø 67 mm
Stroke: 58 mm
Displacement: 200
Compression ratio: 12:1
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 chromium-plated special steel alloy.

To be installed exclusively with Force Master 2.1 control unit 5519412
APRILIA RS 125 ie 4T LC euro 5 2021->2024
APRILIA RS GP Replica 125 ie 4T LC euro 5 2021->2024
APRILIA RX 125 ie 4T LC euro 5 2021->2024
APRILIA SX 125 ie 4T LC euro 5 2021->2024 (M546M)
APRILIA SX SX 125 ie 4T LC euro 5+ 2025-> (M547M)
APRILIA TUONO 125 ie 4T LC euro 5 2021->2024

To be installed exclusively with Force Master 2.1 control unit 5519542
APRILIA RS4 125 ie 4T LC euro 3
APRILIA RS 125 ie 4T LC euro 4 2019->2020 (M545M)
APRILIA RS GP Replica 125 ie 4T LC 4 2019->2020
APRILIA RX 125 ie 4T LC euro 4 2019->2020
APRILIASX 125 ie 4T LC euro 4 2018->2020 (M546M)
APRILIA TUONO 125 ie 4T LC euro 4 2019->2020A
DERBI Senda DRD 4V R - SM 125 ie 4T LC euro 3

To be installed exclusively with Force Master 2.1 control unit 5519437
ITALJET DRAGSTER 125 4T LC euro 5 2021-> (JC1P58MI-3)

To be installed exclusively with Force Master 2.1 control unit 5519720
ITALJET DRAGSTER 200 4T LC euro 5 2021-> (JC1P63ML-4B)