Schmitt Drehfreund crankshaft 44mm stroke, 85mm connecting rod

for Simson S51, S70, S83

Schmitt Drehfreund crankshaft 44mm stroke, 85mm connecting rod for Simson S51, S70, S83

Schmitt Drehfreund crankshaft 44mm stroke, 85mm connecting rod

for Simson S51, S70, S83

Show matching vehicles
-30%*²
€ 177.00
RRP € 252.11
Incl. VAT
Content 1 piece
shipping within 3 - 4 workdays*³
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Description

The Schmitt “Drehfreund” crankshaft is specially designed for racing and high performance engines. With a stroke of 44mm and an 85mm CNC-machined forged rod, it offers outstanding performance for engines in the 50-75cc range. This crankshaft is ideal for Simson models such as S51, S70, S83 with M500 and M700 engine cases.

The technical highlights include optimised pre-compression, which enables a wide torque range, and narrower cheeks compared to the STT42038 steam hammer version. The balance factor is 65%, which ensures an excellent balance. The high-strength yet lightweight forged rod weighs less than 70g and is CNC-machined to support large 17mm needle bearings on the piston pin.

  • Larger, silver-plated piston pin bearing 12x17x15mm for 12mm piston pins included.
  • Several extra large holes in the connecting rod ensure optimum lubrication of the needle bearings.
  • Extended crankshaft stump on the clutch side for an optional 3rd crankshaft bearing.
  • Lower-mounted connecting rod with reinforced compression and larger connecting rod eye.
  • Lighter than the original crankshaft and speed-resistant over 15,000 rpm.
  • Made of 14NiCrMo13 steel, developed in Germany and manufactured in Europe.
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Technical data

Global

Item number
STT49351
Manufacturer Schmitt
Net weight 1370 g
Type Crankshaft

Ratings

Product safety information

Information about the manufacturer

Product Schmitt Drehfreund crankshaft 44mm stroke, 85mm connecting rod for Simson S51, S70, S83
Manufacturer Racing Planet Vertrieb GmbH
Responsible person Racing Planet Vertrieb GmbH
Löbstedter Str. 50
7749 Jena
Germany

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