Steel Thunder Custom Cycles - aftermarket motorcycle parts for Harley-Davidson and American custom bikes.
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Steel Thunder Custom Cycles

152 York Drive

Marshfield, MO 65706

417-468-2326

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

Right Side Drive Twin Cam B Frames can be found here.

Left side drive Rigid Frames can be found here.

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.

MORE FRAME STYLES

FREE SHIPPING!*

NEW!  Right Side Drive Curved Dagger Style Single Down Tube Rigid Frame.

Curved Dagger style rigid frame with single down tube.

Components come with frame, including 1" diameter axle.

Frame detail: axle covers.

Right Side Drive Curved Dagger Style Rigid Single Down Tube Frame with Hidden Axle for 280 Width Rear Tires - Kraft Tech

Frames are made from mandrel bent DOM steel tubing, 2" for the single down tube, 1-3/4" for the backbone and 1-1/2" for the rest.  They are designed to accept 280 width rear tires and any 5 or 6 speed Right Side Drive Softail-Style transmission together with an 1-1/2" rear belt or chain drive.  Engineered with a super strong upper frame design with integral neck webbing that offers unparalleled strength with pleasing aesthetics.  The single down tube merges with the lower frame rails in such a way as to continue the frame's smooth lines, often overlooked on other frames.  These beauties are delivered complete with a component kit. Integral one piece transmission mounting plate is part of the frame structure, assuring unit construction strength and the best possible alignment.  Frames are set up with the offset already built in which requires only simple spacing between the engine and inner primary cover as well as additional spacing of engine sprocket or pulley.  Will accept Kraft/Tech oil tanks and our large selection of one piece round top fenders. Made in the U.S.A.

Rigid Right Side Drive single down tube frame for 280 width tires, comes with component kit including 1" diameter axle. Price includes shipping*.  Choose your configuration:

Part #
Rake
Stretch
Backbone Stretch
Price
Buy Now
KW23158
38°
2"
5"
$2203.38
KW23159
40°
4"
6.5"
$2628.63
KW23160
40°
8"
8.5"
$2708.73

Right Side Drive

RIght SIde Drive rigid frame for 300 mm wide rear tire.

HARDBODY RIGHT SIDE DRIVE RIGID FRAME FOR 300MM TIRE WITH REAR BELT


Requires:
Right Side Drive Transmission
8 1/2" wide right side drive rear wheel designed for 1" axle
1 1/2" wide belt (132 tooth) with 70 tooth pulley
Custom left side mounted brake designed for 1" O.D. axle
Custom fabricated seat, gas tank mount and exhaust


Includes:
1" O.D. rear axle with custom side plates
Welded-in transmission mounting plate
Rubber mounted Oil Tank with center fill cap hole
Chrome plated fork cups with built-in fork stops

MU20051 - 42° Rake, 2" Under Stock Downtube Stretch, Plus 5" Backbone Stretch, Made in U.S.A.
...
Part#:MU20051 ...$2051.15 including free shipping*

Right Side Drive Rigid Frame for 300 mm Rear Tire

Right Side Drive rigid frame for 300 mm wide rear tire.  Tall frame!

 

Made in U.S.A.

 

 

HARDBODY RIGHT SIDE DRIVE RIGID FRAME FOR 300MM TIRE WITH REAR BELT


Requires:
Right Side Drive Transmission
8 1/2" wide right side drive rear wheel designed for 1" axle
1 1/2" wide belt (132 tooth) with 70 tooth pulley
Custom left side mounted brake designed for 1" O.D. axle
Custom fabricated seat, gas tank mount and exhaust


Includes:
1" O.D. rear axle with custom side plates
Welded-in transmission mounting plate
Rubber mounted Oil Tank with center fill cap hole
Chrome plated fork cups with built-in fork stops

MU20055 - 44° Rake, Plus 8" Downtube Stretch, Plus 7" Backbone Stretch, Made in U.S.A.
- Part#:MU20055 ...$2051.15 including free shipping*

SEE ROLLING CHASSIS KIT WITH THIS FRAME HERE.

300/330 Wide Tire Rigid Frames,

Right Side Drive

300 or 330  wide tire rigid frame from Mid-USA.

Welded-in transmission mount.

Custom Axle Caps.

Fork Stops

 

Frame has single downtube.

RIGHT SIDE DRIVE RIGID FRAME FOR WIDE TIRE BIG TWIN - Hardbody by Mid-USA

Right Side Drive
300mm Tire with Rear Belt
330mm Tire with Rear Chain
1" O.D. Rear Axle with Custom Axle Caps
Welded-In Transmission Mounting Plate
Fork Stop Plate with two different mounting positions for your choice of turning radiuses (requires flat-type lower Fork Bracket)
1 3/4" O.D. Single Downtube
1 1/2" O.D. Backbone
1 1/4" O.D. engine cradle & tail section
100% TIG welded
Designed for use with an alternator type Shovelhead or Big Twin Evolution engine
Includes Manufacturer's Statement of Origin

41° Rake
+6" Downtube Stretch
+4" Backbone Stretch

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

Required Components:
Right side drive Softail type (frame mount Transmission
Custom flat-type Lower Fork Bracket suitable to mount the Slotted Fork Stop Plate to
36664 steering bearing races (head cups not required)
1986/1999 Softail style Forward Controls300mm Tire mounted on a 10 1/2" wide (right side drive type) Wheel designed for a 1" axle if used with a 1 1/2" wide rear belt
330mm tire mounted on a 12" wide (right side drive type) Wheel designed for a 1" axle if used with a rear drive chain
Custom fabricated seat, Gas Tank mount and Exhaust
Custom fabricated Fender Supports

Part #MU20047 - RIGID STYLE FRAME, 41 DEG RAKE, +6" STRETCH, +4" BACKBONE, RIGHT SIDE DRIVE, 300MM W/BELT or 330MM W/CHAIN ... $1488.11 including free shipping*


Right Side Drive Rigid Frame for 300/330 tires.

Curved Dagger style with hidden axle.

Curved dagger RSD rigid frame from Kraft Tech.

Components included with frame.

Axle cover detail.

Right Side Drive Curved Dagger Style Rigid Single Down Tube Frame with Hidden Axle for 300 and 330 Width Rear Tires - Kraft Tech

Frames are made from mandrel bent DOM steel tubing, 2" for the single down tube, 1-3/4" for the backbone and 1-1/2" for the rest.  They are designed to accept 300 & 350 width rear tires and any 5 or 6 speed Right Side Drive Softail-Style transmission together with an 1-1/2" rear belt or chain drive.  Engineered with a super strong upper frame design with integral neck webbing that offers unparalleled strength with pleasing aesthetics.  The single down tube merges with the lower frame rails in such a way as to continue the frame's smooth lines, often overlooked on other frames.  These beauties are delivered complete with a component kit. Integral one piece transmission mounting plate is part of the frame structure, assuring unit construction strength and the best possible alignment.  Frames are set up with the offset already built in which requires only simple spacing between the engine and inner primary cover as well as additional spacing of engine sprocket or pulley.  Will accept Kraft/Tech oil tanks and our large selection of one piece round top fenders. Made in the U.S.A.

Rigid Right Side Drive single down tube frame for 300 & 330 width tires, comes with component kit including 1" diameter axle. Price includes shipping*.  Choose your configuration:

Part #
Rake
Stretch
Backbone Stretch
Price
Buy Now
KW23194
38°
4"
6.5"
$2576.20
KW23163
40°
8"
8.5"
$2708.73

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

*FREE SHIPPING APPLIES IN CONTINTENTAL 48 UNITED STATES ONLY. AK, HI and APO/FPO will have additional shipping fees. We ship only within the U.S.A. and to APO/FPO (military addresses; weight and size restrictions apply.). We do not accept foreign credit cards. We do not ship to Puerto Rico.

Prefer to call in your order to Steel Thunder? Call toll-free: 1-866-889-7828. 9-5 CST M-F.

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Please note that all prices are subject to change.