412 Series Shocks — 343 mm (13.50 in), rear, chrome

PROGRESSIVE SUSPENSION 412 Series Shocks — 343 mm (13.50 in), rear, chrome – 58-72 Big Twin

DS-310087
412-4029C
Durable, cost‑effective shocks for Harley models with a five‑position spring preload adjuster; multiple finish options; made in the USA.
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€501.93
€609.59
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The 412 Series Shocks are designed specifically for Harley models and provide a simple, durable, cost‑effective improvement to your motorcycle's suspension performance. A five‑position cam‑style spring preload adjuster lets you easily dial in your ride. Some or all shocks listed are approved for road use; refer to the most recent certificate for current listing. There are multiple style options available, including full show‑chrome or black covers, and either chrome or black springs and end caps. Made in the USA, all shocks are measured center‑of‑eyelet to center‑of‑eyelet.

When installing shocks on '86–'15 XL models, it may be necessary to modify or space the chain or belt guard to allow proper clearance. A shock slightly longer than stock may alter the head angle slightly and provide somewhat quicker steering; a shock slightly shorter than stock may alter the head angle slightly and provide somewhat slower steering. Heavy duty applications are recommended for bikes that operate at or near the manufacturer's maximum load rating over 50% of the time. Before purchasing or attempting to install shocks that are different than the OEM length, confirm that your wheel travel can be altered without causing clearance issues, such as swingarm/axle to exhaust contact as well as chain/belt guard or tire contact. 🏍️🔧

: 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