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TAKEGAWA S Stage Bore Up Kit FOR 138cc ΥΑΜΑΗΑ XTZ 125, YX 125 DX, YB125 SP
Engine Displacement: 138cc
Bore Diameter: 57mm
Compression Ratio: 11.6: 1
Cylinder: Aluminum Steel Sleeve Cylinder It is S Stage Bore Up Kit which can obtain powerful output characteristics with Bolt On mounted as Normal cylinder head.
By installing Sports Camshaft at the same time, the engine output of SStage is drawn out to the maximum Large limit, realizing Torque fully running different from Normal engine.
I applied MolybdenumCoat to the Skirt section of Piston and made good initial familiarity with Cylinder.
Compression ratio 11.6:1
■ Exhaust System
Exhaust efficiency improves and output up becomes possible.
Also compatibility with SP Takegawa's S Stage Bore Up Kit is outstanding.
Cone Oval Exhaust System (Slip-on Silencer) Part number 04-02-0241
Power Silent Oval Exhaust System (Slip-on Silencer) Part number 04-02-0242