NEW!

Fits K Model & Sportster 1952/1981

NECK CUP CONVERSION KIT FOR SPORTSTER - OLD STF

Use this conversion kit when installing a Big Twin or late Sportster 1" neck fork assembly on your early Sportster.
Allows easy installation of our Hardbody® springers as well.
Simply remove your existing cups and install these steel cups into your frame neck and you are ready for Big Twin forks!
Includes Timken® bearings and races.

Part #: 36652 - Old-STF - Raw Steel Neck Cup Conversion Kit.
Fits K Model & Sportster 1952/1981 ... $122.85

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)
• 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

Big-Un Front Fork Assembly fits Big Twin 1949/Later (except FLT models), Sportster 1982/Later and most custom frames. Includes spanner wrench. Requires fork oil.

Standard Rake BIG-UN Front Fork Kit, No Rake
PART #	LENGTH	DISC STYLE	PRICE	BUY NOW
M36746	Standard 31"	Single	$1533.15
M36743	Standard 31"	Dual	$1543.50
BIG-UN Front Fork with Raked Trees for single or dual disc
PART #	LENGTH	TREE RAKE	PRICE	BUY NOW
M39955	+2 oversize	3 degrees	$1304.70
M39961	+2 oversize	5 degrees	$1305.70
M39956	+4 oversize	3 degrees	$1304.70
M39962	+4 oversize	5 degrees	$1305.70
M39957	+6 oversize	3 degrees	$1304.70
M39963	+6 oversize	5 degrees	$1305.70
M39958	+8 oversize	3 degrees	$1314.69
M39964	+8 oversize	5 degrees	$1315.68
M39959	+10 oversize	3 degrees	$1340.66
M39965	+10 oversize	5 degrees	$1341.66
M39960	+12 oversize	3 degrees	$1366.64
M39966	+12 oversize	5 degrees	$1367.63

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

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 (description below).

Smooth Leg Fork Kit - Part#: M39930 ... $827.44 Kit must be assembled by a qualified mechanic.

Optional fork cup: 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. (Please note our $35 minimum purchase. Purchase with Front Fork, or take advantage of our Flat Rate Shipping for $12.95 per order and get everything you need now.)
#M36671 ... $21.75

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.