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Harley-Davidson® Motorcycles
Where ‘Old School’ Never Went Out Of Style....

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Home > Products > Frames & Components > Special Order 45" Frames
With more than 1,200 frame part numbers for Harley-Davidson motorcycle engines, Paughco is without a doubt, the industry leader in this product segment. And that doesn’t include the variations to the cataloged frames that you can special order. There is something here for everyone.... whether you’re trying to build
a Twin Cam-powered “Bagger” or a “Bobber” with a flathead 45" engine in it.

DUE TO THE EXTREMELY LARGE SELECTION OF FRAMES AND THEIR AVAILABLE OPTIONS, PAUGHCO FRAMES ARE BUILT TO ORDER. WHILE PAUGHCO FRAMES HAVE MANY STOCK-
TYPE OPTIONS, THEY ARE NOT STOCK REPLACEMENT FRAMES..... CLICK HERE TO REVIEW OUR ‘IMPORTANT NOTES’ BEFORE ORDERING, TO MAKE SURE YOU GET THE EXACT FRAME YOU WANT OR NEED.

 

IF YOU DON’T WANT TO WAIT THE 3-4 WEEKS IT WILL TAKE US TO CUSTOM BUILD YOUR FRAME, WE KEEP A SELECTION OF FOURTEEN OF OUR MOST POPULAR FRAMES IN-STOCK
AT ALL TIMES, AND THEY ARE AVAILABLE FOR IMMEDIATE SHIPMENT. YOU CAN VIEW
THEM BY CLICKING HERE.

 

PLEASE REVIEW THE VARIOUS FRAME STYLES SHOWN BELOW, AND CALL US TOLL FREE
AT 800-423-2621 TO SPEAK WITH ONE OF OUR FRAME SPECIALISTS.

 

THE FRAMES SHOWN ON THIS PAGE DO NOT QUALIFY FOR OUR FREE FREIGHT PROGRAM DUE TO THEIR SIZE AND SHAPE.

 

CLICK HERE TO DOWNLOAD A PDF OF THE FRAME CATALOG SECTION FOR 45" ENGINES

 


 
photo of motorcycle assembled with paughco FHR139 single loop bobber frame for 1937-1973 harley-davidson flathead 45" engine
 

Rigid Frames For 1937-1973 Flathead 45" Engines

Single downtube rigid frames with Chopper-style necks that use a 1941–1969 four-speed transmission instead of the old three-speed unit. We designed a special engine sprocket (see below - must be purchased separately) for Big Twin dual row primary chains and positioned the transmission mounts so that the primary drive com-ponents and special Paughco covers from an early 74" Big Twin can be fitted to the bike. And for those who don’t want to deal with a wet clutch, we have a BDL belt drive unit instead (see below - must be purchased separately).

Click Here To Review Our ‘Important Notes’ Before Ordering.

 
photo of paughco FHR139 rigid frame for harley-davidson 45" engines and 4-speed transmissions photo of paughco FHR139 rigid frame for harley-davidson 45" engines and 4-speed transmissions photo of required components for paughco rigid frames for harley-davidson 45" and 900cc magnum engines with 4-speed transmissions

Required Components

The items below must be purchased separately, and are required to complete your frame unless you already have them, or fabricate something yourself. We have two styles of exhaust systems to choose from.

218FH Transmission mount plate  $124.95
748FH Wraparound 3-qt. oil tank  $194.95
748RDFH Barrel-style 3-qt. oil tank  $343.95
728A Upswept Fishtail drag pipes  $263.95
728B Slashcut drag pipe set  $250.95
26BK 3/4"-diameter rear axle kit for disc brake rear wheels  $101.95
143 Chrome wheel adjusting screws with lock nuts (sold in pairs)  $17.95
142-1 Complete chrome fork cup kit for frame neck (includes dust shields and Timken bearings with races)  $76.95

Engine Sprockets For 45" Frames

These sprockets convert 45" engines to use a Big Twin double-row primary chain with our 45" frames. Install a 4-speed Big Twin transmission into the frame using the included mounting plate.... aligns perfectly with 1936–1964 OEM mainshafts.

45SPK20 20-tooth  $59.95
45SPK22 22-tooth  $59.95
45SPK24 24-tooth  $59.95

BDL Open Belt Drive Kit For 45" Engines

A 1½"-wide open belt drive kit for 45" motors installed in our frame. The front pulley has the correct taper for the 45" engine shaft, and the rear clutch assembly is a Big Twin 4-speed style.

45BDL       Complete kit  $727.95

 

CALL 800-423-2621 TO ORDER THESE FRAMES NOW!
TERMS AND CONDITIONS APPLY
 
photo of motorcycle assembled with paughco FHR139 single loop bobber frame for 1937-1973 custom harley-davidson 900cc magnum engine
photo of paughco rigid frame for custom harley-davidson 900cc magnum engines and 4-speed transmissions

“Magnum Motor” 45" Rigid Frames

Now available exclusively from Paughco, these frames were specially-designed to work with the legendary “Magnum Motors” first built in the late 60’s. These motors feature a 45" lower end with a 900cc Sportster top end, and they not only looked cool, but they ran as good as they looked. Paughco’s new Magnum Motor frames have all the same features of our standard 45" frames with single front downtube styling, and the ability to use a 1941-1969 4-speed Big Twin transmission. All of the available accessories for our 45" frames shown above (except the exhaust systems – call for more information) will work with both frames. Available in all the popular rakes and stretches. See the chart at the upper right for frame part numbers.

Click Here To Review Our ‘Important Notes’ Before Ordering.

photo of custom harley-davidson 900cc magnum engine

A LIMITED NUMBER OF ‘MAGNUM’
MOTORS ARE AVAILABLE.
PLEASE CALL FOR DETAILS

Required Components

The items below must be purchased separately, and are required to complete your frame unless you already have them, or fabricate something yourself. Call us for information on available exhaust systems.

218FH Transmission mount plate  $124.95
748FH Wraparound 3-qt. oil tank  $194.95
748RDFH Barrel-style 3-qt. oil tank  $343.95
26BK 3/4"-diameter rear axle kit for disc brake rear wheels  $101.95
143 Chrome wheel adjusting screws with lock nuts (sold in pairs)  $17.95
142-1 Complete chrome fork cup kit for frame neck (includes dust shields and Timken bearings with races)  $76.95

Engine Sprockets For 45" Frames

These sprockets convert 45" lower ends to use a Big Twin double-row primary chain with our ‘Magnum’ frames. Install a 4-speed Big Twin transmission into the frame using the included mounting plate.... aligns perfectly with 1936–1964 OEM mainshafts.

45SPK20 20-tooth  $59.95
45SPK22 22-tooth  $59.95
45SPK24 24-tooth  $59.95

BDL Open Belt Drive Kit For 45" Engines

A 1½"-wide open belt drive kit for ‘Magnum’ motors installed in our frame. The front pulley has the correct taper for the 45" engine shaft, and the rear clutch assembly is a Big Twin 4-speed style.

45BDL       Complete kit  $727.95

 

CALL 800-423-2621 TO ORDER THESE FRAMES NOW!
TERMS AND CONDITIONS APPLY
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© 2008-2013 Paughco, Inc.  All Rights Reserved
Paughco.com - Your Source for Harley-Davidson® Parts and Accessories
Use of the word Harley-Davidson, various model names and designations, and
OEM part numbers, are provided solely for reference and application information,
and there is no affiliation between Harley-Davidson, Inc. and Paughco, Inc.
Paughco sells Chopper parts, and aftermarket parts and accessories for Harley-Davidson,
Victory, Sportster, Fat Bob, Hydra-Glide, Duo-Glide, Electra Glide, Road Glide, Street Glide,
Super Glide, Tour Glide, Dyna Glide, Dyna Wide Glide, Road King, Softail, Fat Boy,
Heritage Softail, Springer Softail, Low Rider, 45, Flathead, Knucklehead, Panhead, Shovelhead,
Evolution, Blockhead and Twin Cam motorcycles. We also sell Bagger-Werx, Yankee Engineuity,
La Rosa Design, SAS, and Performance Machine parts for your Harley-Davidson® motorcycle
.