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Seat Post Spring Sets 1930-1980

Complete replacement spring sets for Big Twin and 45” seat posts. The standard version works for riders up to approx. 100 kg, the Heavy Duty is good for riders heavier than 100 kg,

  • for seat post
  • fits V-models 1930-1936, Big Twin 4-speed 1936-1980 and 45”/750 cc Sidevalves (except K-models) 1929-1973
  • steel / spring steel
Item №
net price*
Availability in warehouse Germany
Seat Post Spring Sets 1930-1980
»Standard«; < 100 kg; replaces OEM 51772-31
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Seat Post Spring Sets 1930-1980
»Heavy Duty«; >100 kg; replaces OEM 51771-29
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* United States of America: Tax free shipping. Please check your local import fees.

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