412 Series Shocks — 343 mm (13.5") extended length, Chrome

PROGRESSIVE SUSPENSION 412 Series Shocks — 343 mm (13.5") extended length, Chrome – 58-72 Big Twin

PROGRESSIVE SUSPENSION
DS-310087
412-4029C

Durable, easy-to-adjust shocks for Harley models with five-position preload and multiple style options.

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€521.52
€633.37
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The 412 Series Shocks deliver a simple, durable and cost-effective suspension improvement designed specifically for Harley models. 🚀

  • Five-position cam-style spring preload adjuster lets you quickly dial in your ride.
  • Simple design provides reliable performance for everyday and spirited riding.
  • Several style options are available, plus heavy-duty variants for high-load use.
  • Made in the USA; all shocks are measured center-of-eyelet to center-of-eyelet.

When installing on some models it may be necessary to modify or space the chain/belt guard for proper clearance, and a shock that is slightly longer or shorter than stock can alter head angle and steering response.

: DS-310087
In Stock

Data sheet

Type
Coilover Monotube
Units
Pair
Color/Finish
Chrome
Brand
PROGRESSIVE SUSPENSION
Duty
Standard
Adjustment Style
Automatic
Damping Method
Gas Charged
Reservoir Location
Internal
Spring Type
Single Progressive Rate
Extended Length
343.00 mm (13.50")
Progressive Spring Rate
4.80 kg/mm - 5.65 kg/mm (270 lb/in - 315 lb/in)
Material
Steel
Harley Family
Vintage Big Twin

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Duo Glide Big Twin 1958
Harley Davidson Duo Glide Big Twin 1959
Harley Davidson Duo Glide Big Twin 1960
Harley Davidson Duo Glide Big Twin 1961
Harley Davidson Duo Glide Big Twin 1962
Harley Davidson Duo Glide Big Twin 1963
Harley Davidson Duo Glide Big Twin 1964
Harley Davidson Electra Glide Big Twin 1965
Harley Davidson Electra Glide Big Twin 1966
Harley Davidson Electra Glide Big Twin 1967
Harley Davidson Electra Glide Big Twin 1968
Harley Davidson Electra Glide Big Twin 1969
Harley Davidson Electra Glide Big Twin 1970
Harley Davidson Electra Glide Big Twin 1971
Harley Davidson Electra Glide Big Twin 1972
Harley Davidson Duo Glide Big Twin 1958
Harley Davidson Duo Glide Big Twin 1959
Harley Davidson Duo Glide Big Twin 1960
Harley Davidson Duo Glide Big Twin 1961
Harley Davidson Duo Glide Big Twin 1962
Harley Davidson Duo Glide Big Twin 1963
Harley Davidson Duo Glide Big Twin 1964
Harley Davidson Electra Glide Big Twin 1970
Harley Davidson Electra Glide Big Twin 1971
Harley Davidson Electra Glide Big Twin 1972
Harley Davidson Super Glide Big Twin 1971
Harley Davidson Super Glide Big Twin 1972