Frames are EXCLUDED from the $99 & up Free Economy Shipping special.
- For 1957-1985 Harley-Davidson Sportster engines
- Includes MSO (Manufacturer’s Statement of Origin)
- 32 degree rake neck 3″ up from stock location
- Highest quality available with perfect fit and finish
- Made in Cleveland, Ohio, USA.
The Gasbox full frames are the highest quality and best engineered available. This frame allows direct bolt-in fitment for 1957-1981 Harley Ironhead Sportster engines. It will also accept 1982-1985 Ironhead Sportster engines, though the rear motor mount on these years needs unbolted and replaced with the
earlier rear motor mount
, Harley OEM # 16203-67, so it will directly bolt in place. All 1 inch tubing, completely TIG welded and made in Cleveland, Ohio, USA.
Unlike other custom frames, the Gasbox Ironhead frame uses stock motor mounts all around, with the engine cradled low in the frame rails just like a stock bike. This looks much cleaner and keeps the finished chopper looking lean and handling better with a lower center of gravity. This frame also accepts the stock early style kickstand. The neck has a 32 degree rake and is +3″ higher than the stock location. It is set up for a 1″ stem, and utilizes 1″ stem timken style neck cups. This stem size is very common and is found on narrow glide front ends on Sportsters 1982 and later, and on Harley Big Twin front ends, including narrow glide, wide glide, OEM and most aftermarket springer front ends. The
rigid rear hardtail section
has approximately 4 inches of stretch and is set up to have 2 inches of drop. This means that with a front end and wheels on the bike the lower frame rails sit 2 inches closer to the ground than stock for that perfect stance. The axle plates are set up for a standard 3/4 inch rear axle and accepts a stock disc brake Sportster rear axle. This frame also features integrated upper mounts for
Horseshoe Oil Tank SKU 010404.
The
Gasbox Battery Box Adapter Plate
allows easy mounting of all
Gasbox universal battery boxes
to all Gasbox Full Frames and also features an integrated lower fender support. The gas tank mounts on this frame are designed for direct bolt on of the
Ironhead Sportster Replica Stock Style Gas Tank SKU 007587
.
Lowbrow Customs
Rear Chain Adjusters for 3/4 inch Axles
are a perfect fit with this frame. This frame is designed for use with disc brake rear wheels, it will not work with stock, early Ironhead drum brake wheels. Sportster disc brake rear wheels are a perfect fit, as are Cycle Standard 16 x 3.00 inch rear wheels, such as the
Black SKU 010383
or
Chrome SKU 010382
. Made in the USA.
Once you receive the frame you will follow the included instructions and contact the Gasbox and the MSO (Manufacturer’s Statement of Origin) will be mailed directly to you. This will have the frame’s individual serial number (stamped into the the neck of the frame) as well as the purchaser’s information. This is needed in most places when titling a custom motorcycle.
Note: There are no returns on carburetors, electrical items, full frames, hardtails or made-to-order items (such as magnetos) unless there is a manufacturer’s defect.








































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