Steel Thunder Custom Cycles Motorcycle Parts store for Harley-Davidson and custom bikes.

You can navigate Steel Thunder Custom Cycles' webpage from this bar on any shopping page. Home Page Site Map Catalogs Contact Us Sportster Section

WELCOME TO OUR NEWLY IMPROVED SITE!

Pay with PayPal:  You don't need an account with PayPal, you can also use your credit card.  Or call us to use your credit card or to pay by check.  Whatever works best for you!  PLEASE NOTE:  We Only Ship Within the U.S.A.

SHOPPING:

Solution Graphics

Secured by SSL - an authentic COMOCO site.

Protected by Copyscape Duplicate Content Detection Software

Body

Books/Manuals

Catalogs

Control

Drivetrain/ Transmission

Electrical

Engines

Exhaust

Frames & Swingarms

Front End

Fuel : Gas/Air/Oil

General Merchandise

BIKER GIFT GIVING MADE EASY: Gift Suggestions/Gift Certificates/Gifts

Handlebar/Control

Ignition

Lighting &  Licence plates

Mirrors

Posters of motorcycles

Rolling Chassis Kits

Saddlebags/Luggage

Seats & Sissy Bars

Security

Shocks

Sportster Section

Tools/Shop/Hardware

Trailers/Ramps/Wheel Chocks

Wheels/Tires

Wide Glide Conversion/ Triple Trees

Wide Tire Kits

OTHER PAGES:

Credentials

Contact Us

F.A.Q. (frequently asked questions)

Find Our Store/Shop

Site Map & Search

Tech & Info Section

Terms

Photos, Fun & Links

Steel Thunder Custom Cycles
3418 Teagues Road
Marshfield, MO 65706
417-468-2326

We have

Gift Certificates

for great, easy and instant gift giving!

CLICK HERE FOR MORE INFO

Thank you for shopping at Steel Thunder Custom Cycles online motorcycle parts store!

 

 Motorcycle Belt Drive Kits & Parts

FREE SHIPPING!

NEW!

2 5/8" Open Belt Drive

BDL 2-5/8" open belt drive, polished, for late model Softail Harley-Davidson

 

Black BDL 5 5/8" open belt drive for 2007 thru 2010 Softail HD.

 

Internals shown for BDL/RevTech 2-5/8" open belt drives.

NOTE:  Will NOT fit Rocker Models

RevTech® Open Belt Drives by BDL®

RevTech® and BDL® have teamed up to produce this stunning, yet affordable belt drive unit. Fitted with BDL’s patented ball bearing lock up clutch.... a must for big inch motors. The RevTech® belt drive by BDL® is completely made in the USA and utilizes all of BDL’s proven components.
This kit includes a newly designed motor plate cut from 6061-T6 billet aluminum and then fully polished, double row sealed main shaft bearing, polished aluminum pulley covers and side plate, competitor clutch with Kevlar® friction plates and newly designed ball bearing lock up pressure plate, starter jack shaft and housing. The kit comes complete with the standard pulley offset. For installation on wide tire applications you must purchase an additional pulley offset. Made in the U.S.A.


RevTech® 2 5/8" Open Belt Drive by BDL®

We decided to go a little narrower on the later model drives, other than that the components are the same high quality used on the 90-06 models with the same awesome features listed above.

C697145 - Polished fits all Softail® models (except Rocker) from 07-10 ... $1,606.49 including FREE SHIPPING*

C697146 - Black fits all Softail® models (except Rocker) from 07-10 ... $1,733.39 including FREE SHIPPING*

BDL's Top Fuel Street Belt Drive, 14mm, polished, outboard bearing support.

 

BDL 14MM POLISHED BELT DRIVE KITS FOR SOFTAIL

BDL's new monster Top Fuel Street drive is ready for action. The all new 14mm by 3 3/8" belt is the same that the top fuel racers use on their 600 plus horsepower machines.Designed for oil filter mounting in the motor plate. This is the complete drive with outboard bearing supports. The outboard support plate is reversible. The back side is channeled for another distinct look, but just the flat side will be polished. Made in U.S.A.
Kit with outboard bearing support.
Fits Softail 1990/2006 - Part#:MU77204 ... $2,136.64 including free shipping*

BDL polished Belt Drive.

BDL 14MM POLISHED BELT DRIVE KITS FOR SOFTAIL

BDL's new monster Top Fuel Street drive is ready for action. The all new 14mm by 3 3/8" belt is the same that the top fuel racers use on their 600 plus horsepower machines. We offer two kits, both of which are designed for oil filter mounting in the motor plate. Part number MU77203 is the complete drive with side guard. Part number MU77204 (above) is the complete drive with outboard bearing supports. The outboard support plate is reversible. The back side is channeled for another distinct look, but just the flat side will be polished. Fits Softail 1990/2006. Made in USA.
Kit with fully exposed pulley covers. Part#:MU77203 ... $1868.53 including free shipping*

BDL Electric Start 3 inch 8mm open primary belt drive kit for Big Twin.

 

 

 

BDL ELECTRIC START 3 inch 8MM OPEN PRIMARY BELT DRIVE KIT FOR BIG TWIN

These kits are truly a custom builders delight. Manufactured by Belt Drives Limited (BDL) for unsurpassed quality in the motorcycle industry. All kits include BDL's "quiet clutch" with Kevlar fiber plates that virtually eliminates the clutch rattle that is normally associated with open belt drives. Kits are available with your choice of clutch spring, coil type or diaphragm type as listed. Our one piece, CNC machined billet aluminum motor plate features a double row sealed bearing for maximum strength on the mainshaft. The starter ring gear pocket is recessed into the plate and the starter housing is designed to cover most of the open area of the gear. To further enhance the appearance, a polished aluminum cover is included that fits behind the front pulley and camouflages the stator. A side guard is held in place with hex stand-offs and button head allens. We also include a special starter gear. The 4 speed kit is designed for use with ratchet top transmission, 1991/Later starter motor and a 1979/Later 4 speed clutch release arm 44208. Simple modifications will have to be made to the clutch release arm and a small cut out of the oil tank bracket will be needed for starter motor clearance on FX models. Includes instructions. Softail kits include a two piece front pulley consisting of a 3 inch wide pulley and a splined steel insert. By replacing the included insert with a longer one, along with the corresponding alternator mount and offset transmission mounting plate, you can install these belt drive kits on frames designed for wide tire applications. Made in USA.
Complete Kit without oil filter. Big Twin 4 speed models 1970/1978. Use with 1991/Later OEM starter motor or our 17058 47/76 tooth combination. Coil spring clutch.

Prices include free shipping*. USE CHART BELOW:

Application Clutch Type Part # Price Buy Now
Big Twin 4 speed 1970/78. Use with a 1991/L OEM starter motor. 47-76 tooth combination. Coil Spring MU77000 $1,506.55 ships free
Big Twin 4 Speed models 1970/1978. Includes All Balls high torque 1.4 t starter motor. 47-76 tooth combination. Coil Spring MU77033

$1,741.18 ships free

Softail Late 1986/89. Use with a 1991/Later OEM starter motor. 47-72 tooth combination Coil Spring MU77032 $1,506.50 ships free
Softail 1990/2006. 47-72 tooth combination. Coil Spring

MU77025

$1,287.00 ships free
Softail 1990/2006 47-72 tooth combination. Diaphragm Spring

MU77026

$1,536.48 ships free

FLT & FXR models 1990/Later. 48-72 tooth combination. Coil Spring MU77034 $1,506.55 ships free
3 inch belt drive for Softail from BDL. POLISHED 3 INCH BELT DRIVE KIT FOR SOFTAIL - BDL

Outboard bearing support prevents shaft flex for high horsepower applications.
3" wide belt with 8mm teeth.
47 x 72 tooth pulley combination produces a 1.53:1 primary drive ratio.
Includes heavy duty type 66 tooth starter ring gear and 9 tooth pinion gear.
One piece engine to transmission mounting plate for ultimate strength and alignment.
Quiet type clutch features Kevlar friction material bonded to 6062 T-6 aluminum plates.
For wide tire applications with an offset engine location use our extra length front pulley inserts found in Drive Train Section of the 'Just Hard Parts' Catalog.
Includes instructions. Made in the U.S.A.

Fits Softail 1990/2006 - Part#: MU77039 ... $1,731.11 including free shipping*

Outboard Bearing Support for Primo Belt Drives, Brute IV and Brute V.

 

 

 

 

OUTBOARD BEARING SUPPORT FOR PRIMO 'BRUTE IV' & 'BRUTE V' BELT DRIVES

Engineered and designed for extreme high performance applications or just plain good looks. You get both with Primo Belt Drives all new 'Outboard Bearing support.' Not just another pretty face, Primo's Outboard Bearing Support provides added rigidity and structural support for the 'brute IV' and 'Brute V' open belt drive systems.


Polished, Outboard Bearing Support with Shroud, Fits BRUTE V - Part#:MU77440 ... our price $789.99 including free shipping*

Polished, Outboard Bearing Support with Shroud, Fits BRUTE IV - Part#:MU77441 ... our price $789.99 including free shipping*

End that belt slip!

BDL Lock Up Clutch Kit shown installed.

Shown installed.

Lock up clutch kit for BDL will stop that belt slip problem.

LOCK UP CLUTCH KIT FOR BDL CLUTCHES - BDL

Centrifugal force allows the actuator arms to move outward, which applies extra pressure against the pressure plate and clutch springs for positive engagement with no clutch slippage.
Gives you the advantage of using the lighter pull 6 clutch spring set with no clutch slippage at hard throttles.
Works well on any size engine.
Manufactured from hard anodized CNC machined billet aluminum.
Includes instructions. Made in U.S.A.

Lock up clutch kit for BDL clutches. Fits BDL 8mm belt drives with dome style BDL pressure plate. Part#:MU77316 ... $172.86 including shipping*

Kit includes pressure plate, spring collar, diaphragm spring, shoulder bolts.

Coil Spring to diaphragm spring retro-fit kit for BDL belt drives. Motorcycle parts.

Retro-fit kit, coil spring to diaphragm spring, shown installed.

COIL SPRING TO DIAPHRAGM SPRING RETRO-FIT KITS FOR BDL DRIVES - BDL

Provides for a smooth clutch engagement and reduces hand fatigue that is sometimes more noticeable with a coil type spring.
Kit includes a pressure plate, spring collar, diaphragm spring and 4 shoulder bolts.
Kit includes medium duty diaphragm spring. (Fits both kits.)
Available separately is a heavy duty diaphragm spring (25% stronger). (Also fits both kits.)
Pressure plate is constructed from lightweight cast aluminum.
Includes instructions. Made in U.S.A.

All years with BDL 12 coil spring clutch hub (all 3" open belt drives). Prices include shipping*.

Strength ** Fitment Part # Price Buy Now
Medium Duty BDL Belt Drives with pressure plates machined for 12 coil springs. MU73330 $80.60
Heavy Duty BDL Belt Drives with pressure plates machined for 12 coil springs. MU73332 $80.60

** NOTE: Medium duty is 15% stronger than OE, Heavy duty is 25% stronger than OE.

Quiet Clutch Plate kit for BDL Belt Drives. BDL

'QUIET CLUTCH' FOR BDL BELT DRIVES - BDL

The engineers at Belt Drives Ltd. have designed a clutch plate kit that will help to quiet the rattle that is normally associated with open belt drives or closed belt drives with vented covers. Normally the friction plates are splined to the inner clutch hub, but the quiet clutch friction plates incorporate a round dog drive to the outer clutch basket. The friction plates feature a Kevlar friction material and are bonded to 6062 T-6 aluminum plates for light weight. Made in U.S.A.

Complete kit. Fits all Round Dog type BDL belt drives (includes 15 plates) - Part#:MU79913 ... $132.99 including shipping*

Replacement BDL front pulleys for Big Twin 4 Speed. 2 inch and 3 inch wide 8mm pulley .

REPLACEMENT BDL FRONT PULLEYS FOR BIG TWIN 4 SPEED

These 8mm, 47 tooth engine pulleys are direct replacement parts for Belt Drives Limited (BDL) primary belt drive kits. All pulleys are hard anodized aluminum with cast-in steel inserts to maximize the lifespan and provide the greatest weight to strength ratio. Each pulley includes a mounting nut and washer. Fits Big Twin 4 speed kickstart models with 10 spring type clutch 1937/1984 as listed. Made in the U.S.A.

2 inch wide 8mm pulley. Pulley kit for 1955/1984 with Splined engine sprocket shaft (fits MU77009). Part#:MU77324 ... $104.25 including shipping*

3 inch wide 8mm pulley. Pulley kit for 1937/1954 with tapered sprocket engine shaft(fits kit MU77010). Part#:MU77326 ... $114.65 including shipping*
3 inch wide 8mm pulley. Pulley kit for 1955/1984 with splined engine sprocket shaft (fits MU77011, MU77022, & MU77024). Part#:MU77325 ... $114.65 including shipping*

Pulley Covers for BDL electric start 3 inch open belt drives. Baby moon style.

PULLEY COVERS FOR BDL ELECTRIC START 3" OPEN BELT DRIVES

Baby moon style.
Polished aluminum.
Offers better protection and reduces clutch noise.
Includes special tape for permanent installation and button head bolts if you choose to drill and tap hub for easy on and off access. Made in the U.S.A.

Polished aluminum pulley covers, includes double stick tape and screws for mounting. Fits 5 speed 3" open drives (Softail 1986/Later, FLT 1990/Later and FXR 1990/1994). Part#:MU77330 ... $62.95 including shipping*

Single hole belt guard for BDL 3 inch open drive.

 

Dual hole belt guard for BDL 3 inch open drive.

 

GUARDS FOR BDL 3" OPEN BELT DRIVE.

Complement the looks of your Belt drives Limited 3" Open Primary Drive and improve the safety factor at the same time with one of these belt guards. Available in your choice of single or dual hole to provide a great visual effect when the primary drive is spinning. CNC machined from billet aluminum and polished to a mirror finish, these guards use your existing bolts and are simple to install. Fits Softail Late 1985/Later and Dyna 1990/Later with electric start style 3" open BDL belt drive. Made in the U.S.A.

Single Hole - Part#:MU77341 ... $293.45 including shipping*

Dual Hole- Part#:MU77327 ... $283.23 including shipping*
More Belt Guards can be found on the Driveline Customizing page.

BDL - Belt Drives Unlimited, primary belts. Primary Belt replacements for Big Twin.    NOTE: 1 tooth =.228 inches

REPLACEMENT PRIMARY BELTS FOR BIG TWIN

All replacement primary belts are fiberglass reinforced HTD type rubber belts (except 77511, 77548 & 77533 that are KEVLAR® reinforced) supplied to us straight from the manufacturer to ensure a positive fit every time. If the needed belt length is not known, determine the number of pulley teeth combination and width for the correct belt.

Note: Due to the numerous variables of misalignment and improper tensioning upon installation, there is no warranty on belts.

PRICES INCLUDE SHIPPING*

8MM
Years
Width
Pulley Teeth Combo
# of Belt Teeth
Part #
Price
Buy Now
1937/1964 with open or closed primary and 1979/1984 4 speed with die cast inner primary, kick or electric start (Bullseye belt +.020" longer than MU77501)
1-1/2"
41 & 61
132
MU77500
$56.95
39 & 62
40 & 62
1937/1984 4 speed with open primary kickstart
1-1/2"
47 &76
144
MU77502
$60.30
1937/1984 4 speed with open primary kickstart
2"
47 & 76
144
MU77503
$77.05
1937/1984 4 speed with open primary kickstart
3"
47 & 76
144
MU77504
$103.95
1965/1978 4 speed with sand cast inner primary, kick or electric start
1-1/2"
47 & 61
132
MU77501
$56.95
1965/1984 4 speed with electric start
1-1/2"
45 & 68
138
MU77548
$97.55
Late 1985/Later 5 speed, electric start
1-5/8"
45 & 68
138
MU77511
$97.55
Late 1985/Later 5 speed, electric start
1-5/8"
48 & 68
130
MU77533
$97.55
Late 1985/Later 5 speed, electric start
1-3/4
48 & 72
132
MU77519
$59.90
Late 1985/Later 5 speed, electric start
1-3/4
47 & 72
141

MU77520

$66.45
1955/Later 4 or 5 speed, kick or electric start
3"
47 & 72
141
MU77522
$104.25
 
11MM
Years
Width
Pulley Teeth Combo
# of Belt Teeth
Part #
Price
Buy Now
1937/1984 open or closed primary kick or electric start old style belt drive
1-1/2"

29 & 44

28 & 44

96
MU77505
$88.20
1937/1984 open or closed primary kick or electric start new style belt drive
1-1/2"
31 & 47
99
MU77514
$62.15
1980/1984 5 speed closed primary new style belt drive
1-1/2"
31 & 47
92
MU77515
$83.20
 
14MM
Years
Width
Pulley Teeth Combo
# of Belt Teeth
Part #
Price
Buy Now
1937/1984 4 speed open or closed primary, kick or electric start
1-1/2"

24 & 37 with idler

24 & 38 without idler

78
MU77523
$118.99
1990/Later (Top Fuel Style)
3-3/8"
30 & 46
85
MU77562
$190.99

CLICK HERE TO SEE CUSTOMIZING ACCESSORIES LIKE THIS FLAME COVER

3D flamed guard for Primo Brute !V and Brut V available on Driveline Customizing page. Click 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. Sorry, 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

Please note that all prices are subject to change.

***

Steel Thunder Custom Cycles

3418 Teagues Road

Marshfield, MO 65706

417-468-2326

We hope you'll come visit us ... we'd love to see your ride!

 

 

With God All Things are Possible!

 

Copyright 2002-2010 Steel Thunder Custom Cycles©