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Kraft Tech motorcycle frames are made in the USA.  Rigid frames . Rigid Motorcycle Frames

Kraft/Tech and other manufacturers. All Kraft/Tech frames are made in the USA. All frames come complete with Manufacturer's Statement of Origin (MSO), shipped separately.

RIGID FRAMES FOR SPORTSTERS

MORE FRAME STYLES

Note: As with any frame-up custom build project, it is common shop practice to pre-assemble the entire motorcycle prior to any paint work for compatibility verification of all parts used.

You will get a catalog with your frame containing all the parts you need to finish your project.

Designed for use with Panhead, Shovelhead or Big Twin Evolution engines

Bobber Style RIdgid frame for wide tire Big Twin Harley-Davidson.  Use with Panhead, Shovelhead or BT Evo motor.

 

BOBBER STYLE RIGID FRAME FOR WIDE TIRE BIG TWIN - Kraft Tech

180 Tire with 1 1/2" Belt Drive or 200 Tire with Chain Drive.
1 1/2" O.D. Drawn Over Mandrel (DOM) ASTM A513-96T5 .188" wall tubing for backbone strength.
1 3/4" O.D. x .120" wall thickness tubing for cradle and tail strength.
Manufactured with 5 speed transmission mount plate welded in place for ultimate strength.
No tank mounts so you can mount bobber style gas tanks.
Uses 1986/1999 Softail oil tanks and mounts are sold separately.
Has 30° neck rake and zero downtube stretch for a true bobber stance.
Includes Manufacturer's Statement of Origin.

Part #: 20003 - Bobber Style Rigid Frame, Wide Tire, Designed for use with Panhead, Shovelhead or Big Twin Evolution engines. .. $978.60

Bobber Style frame fits 180mm Tire with 1-1/2" Belt or 200mm Tire with Chain

Bobber style rigid frames for wide tire big twin motorcycles.

neck detail of bobber style motorcycle frame for wide tires.

Axle end detail of bobber motorcycle frame for wide tires.  Up to 200mm.

Frame detail - bobber motorcycle frame for wide tires.

Frame detail for bobber style wide tire motorcycle frame.  Accepts Panhead, Shovelhead, or Big Twin Evolution Engine.

BOBBER STYLE RIGID FRAMES FOR WIDE TIRE BIG TWIN - Kraft Tech

4 or 5 Speed.
180mm Tire with 1 1/2" Belt or 200mm Tire with Chain.
1 1/2" O.D. Drawn Over Mandrel (DOM) ASTM A513-96T5 .188" wall tubing for backbone strength.
1 1/4" O.D. x .120" wall thickness tubing for cradle and tail strength.
Additional clearance built-in at backbone for Evolution style engine with up to .200" taller cylinder/head length. Allows rear rocker box to be serviced without removal of entire engine.
TIG welded in high stress areas.
Dual gussets at front and rear motor mounts and at transmission mounts.
Boxed lower seat post mount.
Welded-on exhaust hanger mount.
Fully machined hour glass style steering neck.
Fork lock tab.
Softail style seat front mounting tab.
Chrome 3/4" O.D. axle kit with axle adjusters, left side spacer and nut.
Polished rear pulley spacer (.900" thick) with mounting bolts.
Weld-on seat post coil mount.
Designed for use with a Panhead, Shovelhead or Big twin Evolution engine.
Includes Manufacturer's Statement of Origin (MSO), shipped separately. Made in the U.S.A.

Part#: M20004 - 30° Rake, No Downtube Stretch ... $940.95

Part #: M20005 - 34° Rake, 2" Downtube Stretch Price ...$940.95

Required Components:
Four of five speed solid mount transmission and matching mounting plate.
Chain or belt final drive.
Softail 1986/1999 rear wheel hub.
FL, FX 1973/1983 chain drive rear hub, use with polished pulley spacer (1.090" thick) kit MU77365.
Softail Late 1987/1999 rear brake caliper and mount.
Flatside Fat Bob gas tanks and mounts.
Softail style oil tank and mounts 1986/1999.
Removable-type fork head cups.
Axle adjuster bolts, Softail 1987/1999.
Rear fender clamps for 1 1/8" O.D. tubing.

Standard Style Rigid Motorcycle Frame for Big Twin.

Extra Gussets to improve engine mount stability.

Extra gussets to improve engine mount stability.

Close up of cross bar.

BOBBER KITS WITH THESE FRAMES

Standard Style Rigid Frame for Big Twin - standard with 4 or 5 speed chain drive - Hardbody

These rigid frames have all the rugged good looks of those found years ago but built with the technology of the 21st century. Today's high output engines require the utmost frame strength, as well as good brakes. These HARDBODY Frames were designed and manufactured with both in mind. Made to fit Panhead, Shovelhead or Big Twin Evolution with solid mount engine. A Manufacturer's Statement of Origin is included.
1 1/2" O.D. Drawn Over Mandrel (DOM) .188" wall tubing for backbone strength.
1 1/4" O.D. Drawn Over Mandrel (DOM) .120" wall tubing for cradle and tail strength.
Additional clearance built-in at backbone for Evolution style engine with up to .200" taller cylinder/head length. Allows rear rocker box to be serviced without removal of entire engine
Will accept 4 or 5 speed transmission.
TIG welded on all new hardened tooling for the most accurate fit possible.
Dual gussets at front & rear motor mounts and at transmission mounts.
Boxed lower seat post mount.
Welded on exhaust hanger mount.
Fully machined hour glass style steering neck.
Fork lock tab.
Softail style seat front mounting tab.

Part#:M20008- 30 degree Rake and No Down tube stretch, will accept 4 or 5 speed tranny .. $802.27

Part#:M20009 - 34 degree Rake and 2" Down tube stretch ... $850.42

 

Many more frame styles: Frame/Body Section

Confused about frame terminology? See tech tip #9. See tech tip #10 for a rake and trail calculator. TECH TIP PAGE

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Don't see what you need?  Contact us.  Chances are we have it.  We have thousands of parts that are not shown online.

PLEASE NOTE: We Do NOT Backorder. If your item is not in stock, you will be notified and given a refund.

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Prefer to call in your order to Steel Thunder? Call 603-237-8200.

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Please note that all prices are subject to change.

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