Steel Thunder Custom Cycles motorcycle parts

 

Shopping Pages:

Control Section:

Brakes, discs, rotors, dashes & instrument panels, gauge brackets, footpegs, forward controls, grips, throttle control, handlebar controls, handlebars, levers, linkage, levers, mirrors, risers, shift & jockey control.

Drivetrain Section:

Belt drives, belt drive covers, clutch kits, chain drives, drivetrain packages, kick start transmission, offset sprockets, points, derby & ignition coves, primary belts, primary chains, primary covers, pulley & brake combo kit, rear drive belts, Sportster performance parts, six speed conversion, rear sprockets, rotors, transmissions & parts.

Electrical Section:

Battery related, battery tenders, charging systems,coils & mounts, dash/instrument panels, speedos, tachs, terminal kits, electronic ignitions, handlebar switches, headlights, horns, lighted license plate mounts, lighting, starter motors, taillights, turn signals, wiring harnesses.

Engine Section:

Motorcycle engine parts, drivetrain packages, cams & cam side parts, big bore kits, big bore piston kits, Sportster engine parts, motor mounts, drivetrain section, engine mounts.

Exhaust Section:

Exhaust pipes listed by model, exhaust accessories, insulating wrap, mufflers, extensions, high heat spray, heat shields, clamps and mounts.

Frame/Body Section:

Frames listed by style, engine mounts, fenders, struts, floorboards, foot rests, pegs, frame covers, hardtails, highway bars, kickstands, lowering kits, seats listed by model, shocks, sissy bars & pads, swingarms.. Also, Rolling Chassis Kits.

Front End Section:

Complete front fork assemblies, fairings & fairing accessories, fork brackets/triple trees, fork tubes, sliders, fork legs, boots, springer front ends & parts, wide glide kits.

Fuel Section (Gas, Oil, Air):

Air cleaners & covers, breathers, carburetors & rebuild kits, fuel injection control, gas tanks, gas caps, gas tank cleaner/prep systems, oil, oil coolers, oil line kits, oil pressure & tank gauges, oil pumps, oil tanks, , velocity stacks.

Saddlebag & Windshield Section:

Saddlebags listed by manufacturer, windshields

Wheel Section

Tires,  tire size chart, 40, 60 & 80 spoke wheels, solid wheels.

General Merchandise Section:

Catalogs, covers, gift certificates, gift suggestions, goggles & eyewear, hardware, luggage racks, motors, motorcycle covers, security, locks & alarms, tools, trailer accessories, ramps, wheel chocks, trailer hitches to put on motorcycle.

Other Pages:

Fun, Photos & Links Section:

Photos of our customer's motorcycles, including bike kit builds, trike build link, free biker ecards, jokes, banner links, text links, link to us, webmaster's awards.

Tech & Info Section

Tech tips, tire size chart, engine break-in, suspension & shocks info, rake and trail calculator, contact page, frequently asked questions (FAQ), our credentails, terms & conditions of sale, disclaimer, international shipping policy.

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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

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

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FLAT RATE SHIPPING APPLIES IN CONTINTENTAL 48 UNITED STATES ONLY. AK, HI and APO/FPO will have additional shipping fees. We ship within the U.S.A. and to APO/FPO (military addresses; weight and size restrictions apply.). We do not accept foreign credit cards. Please see our CONTACT page for more information.

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

FREQUENTLY ASKED QUESTIONS

Please note that all prices are subject to change.

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Steel Thunder Custom Cycles

531 Bungy Road

Columbia, NH 03576

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