DRT Crankshaft Vespa PTS Full Circle Stroke 51mm Cone 20mm conrod 97mm

DRT Crankshaft Vespa PTS Full Circle Stroke 51mm Cone 20mm conrod 97mm

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Product Code: 45089000
45089000
Weight: 1,650g
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Rp4,500,000

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drt crankshaft vespa pts full circle cone stroke

Full Circle Crankshaft DRT for Vespa 100/PK80-125 S/PK125 reed valve, stroke 51,0mm, conrod 97,0mm, cone 20/20mm, M12, SPORT-TUNING, high-performance & roadworthy

Full Circle Crankshafts are used in motors with direct intake racing cylinders or in connection with reed valve intakes. A Full Circle Crankshafts boosts rpm's in all ranges, motors show more pep and agility with a higher power output. This high quality Full Circle Crankshafts from Italian manufacturer MAZZUCCHELLI, has minimal manufacturing tolerances and reduced bearing play. A real guarantee for stability in high rpm ranges and absolute durability.

A Full Circle Crankshaft, in comparison to original crankshafts, has a closed shaft flange. Precompression is higher, crankcase turbulence is reduced. A polished edged connecting rod and lower con rod bearing as silver bearing meet highest requirements. All crankshafts are delivered with upper connecting rod bearing. Ideal usage in connection with direct intakes such as the MALOSSI 136 cc or PARMAKITS. When used with other cylinders, a reed valve manifold is necessary, This also requires the crankcase intake to be enlarged to fit, so the closed flange doesn't close the intake completely. In older 50 cc motors, the precompression plate is often defect. Another situation where a reed valve manifold with a full circle crankshaft can save a crankcase from being thrown away.

Conclusion: Extremely durable and high quality. Full circle crankshafts are a must for cylinders with direct intake such as MALOSSI, PARMAKIT, and QUATTRINI or for highly modified casing intakes for the POLINI 130 cc.

OEM Numbers (for the purpose of comparison) AMK spr 121.20/97 (Ø85) SIP - 31914 (DRT)