Steel Thunder Custom Cycles - aftermarket motorcycle parts for Harley-Davidson and American custom bikes.
  Click to go to home page of Steel Thunder Custom Cycles motorcycle parts store. Click here to go to Site Map and Search  Tool. Click here to contact us here at Steel Thunder Custom Cycles motorcycle parts store.
  Click here to view, download or order catalogs. Click here to go to the Sportster Section.  We love Sportsters!

 

 

 

Win a Motorcycle & Help Bikers Against Child Abuse - More Info & Raffle Tickets for sale here.

SHOPPING:

Specialty pages:

Sportster Section

Buell parts

V-Rod parts

Bike Kits & Rolling Chassis Kits

Body

Books/Manuals

Catalogs

Drivetrain/Transmission

Electrical

Engines

Exhaust

Frames & Swingarms

Front End

Fuel : Gas/Air/Oil

General Merchandise

Gift Suggestions/Gift Certificates

Handlebar/Control

Ignition

Lighting & Licence plates

Mirrors

Motorcycles for saleSaddlebags/Luggage

Seats & Sissy Bars

Security

Shocks

Tools/Shop/Hardware

Trailers/Ramps/Wheel Chocks

Wheels/Tires

Wide Glide Conversion/Triple Trees

Wide Tire Kits

Windshields

OTHER PAGES:

Credentials

Contact Us

F.A.Q. (frequently asked questions)

Local Marshfield Info at steelthunderusa.com

Site Map & Search

Tech & Info Section

Terms

Photos, Fun & Links

Steel Thunder Custom Cycles

152 York Drive

Marshfield, MO 65706

417-468-2326

Front Forks / Front Ends / Fork Kits

FREE SHIPPING!

Complete Front Fork Assemblies
for your American V-Twin Custom or Harley Davidson Motorcycle
 

NOW AVAILABLE WITH RAKED TREES!

Big-Un Front Fork Kit

Big-Un front forks, available in single or dual disc styles.  Standard 31 inch length.

 

Single or Dual Disc

 

 

 

Collett & Spanner Nut

Collett & Spanner Nut

 

Internal For Stop With Bearing Race

Internal For Stop With Bearing Race

 

Hidden Axle Mount

Hidden Axle Mount

BIG-UN CHROME PLATED COMPLETE FRONT FORK KITS FOR CUSTOM USE - Single or Dual Disc - Hardbody by Sun Myth

If you're building a ground up custom or updating your existing fork assembly, this is the front end you've been looking for. With fat tube covers and totally smooth trees, custom is what this assembly is all about. Using a collett type locking system to clamp the fork tubes in the trees, no fasteners are visible, enhancing the smooth look. The axle caps on the lower legs are bullet shaped and cover the ends of the axle to hide them from sight. Fender tabs are removable if you choose to run without a fender for a chopper look. The caliper mounting brackets are removable for your choice of single or dual disc. With this high quality assembly, you'll have that high dollar inverted fork look without the high dollar inverted fork price.

  • Available with raked trees
  • Uses a collett type locking system to clamp the fork tubes in the trees leaving no visible fastener
  • Bullet shaped caps on the lower legs cover the ends of the axle
  • Removable fender tabs
  • Removable caliper mounting brackets
  • Hard chrome 41mm fork slider tubes for years of dependable service
  • Top mount internal fork stop/bearing race
  • Inverted fork look
  • Billet aluminum construction (except fork tubes, axle and steering stem)
  • Standard length is 31" from top bearing to axle (same as FXST)
  • Hidden hardware throughout
  • Available in 0 degree raked trees (same as FLH 4 speed), 3 degree raked trees (same as FXWG and Softail) and 5 degree raked trees
  • Includes spanner wrench
  • Requires fork oil (11.2 oz per leg, shipped dry) (See our all-in-one oil here.)
  • Use with 1984/1999 11 1/2" brake disc and caliper(s)
  • Use with 1984/1999 Wide Glide wheel hub or equivalent
  • Oversized front forks include installed cover plate on right lower leg for a seamless look.
  • 2 brake caliper mounting brackets are included for single or dual disc applications

Fits Big Twin 1949/Later (except FLT models), Sportster 1982/Later and most custom frames. Includes spanner wrench. Requires fork oil.


Single Disc Style BIG-UN Front Fork Kit, Single disc, STD. 31 inches. Part#MU36746 - Price: $1014.48 including FREE SHIPPING*

Dual Disc Style BIG-UN Front Fork Kit. Dual disc, STD. 31 inches. Part#:MU36743 - Price: $1036.08 including FREE SHIPPING*

With Raked Trees for single or dual disc, prices include free shipping*:

PART # LENGTH TREE RAKE PRICE BUY NOW
MU39955 +2 oversize 3 degrees $1025.46

MU39961

+2 oversize 5 degrees $1025.33
 
MU39956  +4 oversize 3 degrees $1033.92 
 
MU39962  +4 oversize  5 degrees $1033.88
 
MU39957 +6 oversize 3 degrees $1049.45 
 
MU39963  +6 oversize  5 degrees $1049.54 
 
MU39958  +8 oversize 3 degrees $1070.19
 
MU39964  +8 oversize  5 degrees  $1070.24
 
MU39959  +10 oversize 3 degrees $1092.65
 
MU39965  +10 oversize  5 degrees $1092.65
 
MU39960  +12 oversize 3 degrees $1115.10 
 
MU39966 +12 oversize  5 degrees $1115.15
 

Note: Cover plate can be used on right or left side.

41mm Complete Front Fork Kit for Big Twin.  Choice of Smooth or Ball Milled Legs.

Smooth Legs shown.

Smooth Legs

Ball Milled Legs shown.

Ball Milled Legs

CHROME PLATED 41MM COMPLETE FRONT FORK KITS FOR BIG TWIN - Hardbody

Lower legs are machined from billet aluminum and feature screw on dust covers, flush mount axle with hidden hardware and removable brake and fender mounts
The 41mm fork tubes measure 24 1/4" long, are hard chrome plated and are the stock length for the models listed
Front end measures 31" from the top stem bearing to the centerline of the axle
Custom axle spacers are required, use 57333 axle spacer that is 6" long and cut to length
The dual removable brake mounts are designed for 1984/1999 OE or similar brake calipers and 11 1/2" brake discs
See Front End Section for Deuce style fender mounts and 2000/Later style brake caliper mounts
Fork kits are shipped without fork oil. Add 11.2 ounces of fork oil per leg of the weight of your choice. (See our all-in-one oil here.)

Fits Big Twin 4 speed 1949/1986*, Softail 1984/1988*, FXDWG 1993/1999 and Custom applications.
* When used with our MU36671 lower fork bearing cup with built in fork stop.

Smooth Leg Fork Kit - Part#: MU39930 ... $875.93 including free shipping*                                                                


Ball Milled Legs Fork Kit - Part#: MU39929 ... $856.89 including free shipping*                    



Kit must be assembled by a qualified mechanic.

Lower Bearing Cup with built in fork stop.

This fork cup has a built in fork stop that cleans up frame neck area for that sanitary custom look. To prevent the cup from twisting in the frame a 3/16" I.D. hole is provided in the fork cup so the frame neck can be drilled by the technician. A 3/16" O.D. staking pin is also included. This chrome plated steel cup is designed to be used with Big Twin frames with removable fork cups. Fits with OEM style FXR or Dyna style lower fork bracket. Also fits custom lower fork brackets with upright fork stop nubs. Must be purchased with Front Fork Kit or other MU# product, not for purchase alone. (You can call to order, please note our $35 minimum purchase.)
#MU36671 ... $21.45 including shipping*


Catalogs

Ton Pel's Fat Bubba Front Fork Set, available in 5 overstock sizes.  Billet aluminum and MASSIVE!

Click on image or here to see larger view.

 

 

 

 

 

TON PELS SIGNATURE FAT BUBBA FRONT FORKS - Massive Big Bubba front ends in 5 over stock sizes

These "Made in Europe" Billet Aluminum Front Forks are something else. They feature massive Triple Tree clamps, large diameter bottom sliders and covers, fully covered fork tubes, and Hidden Axle mount. This Billet aluminum front fork is un-compromised in price and quality. No matter if you are going to use the Fat Bubba forks as stock replacement, or for your Custom Project, it will provide the Fat look that today's Custom builders like.

Triple tree, slider covers and sliders are machined from billet aluminum and have a mirror like highly polished finish. The upper triple tree clamp is 1 1/8” (29 mm) thick, the lower triple tree clamp measures 1 5/16” (34 mm). The fork slider covers and the bottom legs have a very impressive diameter of 2 3/8” (60mm). The lower fork sliders feature fender brackets, as well as dual caliper mounting brackets that take 1984 thru 1999 style OEM or aftermarket single or dual disc brakes. The front wheel axle has a hidden mount for extra sleek looks.

Available in +3, +4”, +6, + 8 and +12” over stock FL length. These Fat Bubba forks come complete with 3 different fork stops to work with almost any stock or aftermarket frame. A can of fork oil is included with each set.

Fat Bubba Front ends:

#KW62117 +3” over stock $1272.76 including shipping
#KW62118 +4” over stock $1272.76 including shipping
#KW62119 +6” over stock $1320.88 including shipping*
#KW62120 +8” over stock $1397.16 including shipping*
#KW62121 +12” over stock $1364.07 including shipping*
Softail and Dyna tear drop complete front fork tube assembly.

Softail & Dyan "Tear Drop" Complete Front Fork Tube Assembly - Kustomwerks

Stock length, nicely chrome plated "Tear Drop" front end.  Assembly includes patented clamp lock to secure the triple tree without visible hardware, hidden fork stop, removable brake caliper mounts, height adjustable fender mounts, hidden axle and all necessary hardware including headlight mount.

Note:  Does not accept stock brake caliper; use with 2000/Later 3/4" axle with sealed bearing wheels.  Cannot be used with tapered wheel bearings.

#KW63031 - Fits single or dual disc FXST models 1984 to 1999, FXWG models 1985 to 1986 and FXDWG models 1993 to 1999 ... $973.83 including shipping*

FXSTD fork assembly; repl. OEM #45343-00

FXSTD-STYLE FRONT FORK ASSEMBLY - Drag Specialties

Stock-length fork assembly includes chrome triple trees, chrome fork legs with satin fork tubes, all internal components and axle with spacer.
Triple trees accept FXSTD risers or standard risers when used with riser inserts DS-289290 .
For use with 00-07 single-disc style brake.

Note: Fork assembly does not include fork oil, top tree nut and washer (use DS-189813) or fork pinch bolts.

.Call for extra parts, save on shipping when you order all together.

Part #: DS1809-2140 - FXSTD fork assembly; repl. OEM #45343-00 ... $829.95 including shipping*

 

0° Rake

Ultima's 58mm Invered Front End Assembly.

Click to see larger

Note:  Standard length is top side of lower tree to center of axle.

 

 

58mm Inverted Front End Assembly - Ultima

Ultima's Inverted Fork Assemblies feature massive 58mm chrome plated upper tubes and triple trees made form 6061-T6 aluminum, Bullet shaped lowers with a completely hidden axle design and exceptional dampening ability for a superior functioning product. These features combined with a precision fit and finish create one of the best value products we offer today.

  • Kit includes Forks and Triple Tree assembly, Axle kit with spacers, Stem Nut and Fork Lock Bracket.
  • These Inverted Forks were designed to use 84/99 FXST style Wheel Assemblies with a Single Disc.  Optional Dual Disc hardware is sold separately.
  • Triple trees are machined for, but do not include, internal fork stop kit # 025-251 sold separately below.
  • Standard Length is OEM FXST length.
  • 0 degree rake.
  • Just $499.99 including FREE SHIPPING!*

58mm Inverted Fork Assembly with 0 Degree Rake. Choose your length:

Part # Length Price Buy Now
02117-181 Standard $499.99
02117-182 +2" $499.99
02117-183 +4" $499.99
02117-184 +6" $499.99
02117-185 +8" $499.99
02117-186 +10" $499.99
02117-187 +12" $499.99

Fork Cups with internal fork stops.

#025-251- FORK CUPS - Polished stainless steel Neck cups with internal fork stops. Fits all frames that accept neck cups ... Purchased WITH FORK ASSY just $85.05 with free shipping*

Purchased ALONE $93.35 including shipping*

 

5° Rake

58mm inverted front end with blind triple trees with a 5 degree rake from Ultima.

Click to see larger

 

Note:  Standard length is top side of lower tree to center of axle

58mm Inverted Front End Assembly with Blind Triple Trees with 5 degree rake - Ultima

  • Kit includes Forks and Blind Triple Tree assembly with 5 degree rake, Axle kit with spacers, Stem Nut and Fork Lock Bracket.
  • These Inverted forks were designed to use 84/99 FXST style Wheel assemblies with a Single Disc. Optional Dual Disc hardware is sold separately.
  • Triple trees are machined for, but do not include, internal fork stop kit # 025-251 sold separately below.
  • Standard Length is OEM FXST length.

58mm Inverted Front End Assembly with Blind Triple Trees with 5° Rake. Choose your length:

Part # Length Price Buy Now
02117-150 Standard $519.99
02117-151 +2" $519.99
02117-152 +4" $519.99
02117-153 +6" $519.99
02117-154 +8" $519.99
02117-155 +10" $519.99
02117-156 +12" $519.99

#02117-157 - Optional Dual Disc Bracket ... $56.84 Ships free with Front end

Optional Dual Disc Bracket purchased alone .. $64.84 including shipping*

Fork Cups with internal fork stops.

#025-251- FORK CUPS - Polished stainless steel Neck cups with internal fork stops. Fits all frames that accept neck cups ... Purchased WITH FORK ASSY just $85.05 with free shipping*

Purchased ALONE $93.35 including shipping*

FOR SPRINGER FRONT END ASSEMBLIES & ACCESSORIES CLICK HERE.

FOR FORK TUBES & SLIDERS, FORK LEGS, INTERNALS, CLICK HERE.

FOR FRONT FORK BRACKETS/TRIPLE TREES & WIDE GLIDE CONVERSION KITS CLICK HERE.

Fork oil - See our all-in-one oil here.

*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.

FREQUENTLY ASKED QUESTIONS

Pay with Paypal

Please note that all prices are subject to change.