Steel Thunder Custom Cycles motorcycle parts

 

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Drivetrain Section:

Belt drives, belt drive covers, clutch kits, chain drives, drivetrain packages, kick start transmission, offset sprockets, points, derby & ignition coves, primary belts, primary chains, primary covers, pulley & brake combo kit, rear drive belts, Sportster performance parts, six speed conversion, rear sprockets, rotors, transmissions & parts.

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Battery related, battery tenders, charging systems,coils & mounts, dash/instrument panels, speedos, tachs, terminal kits, electronic ignitions, handlebar switches, headlights, horns, lighted license plate mounts, lighting, starter motors, taillights, turn signals, wiring harnesses.

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Motorcycle engine parts, drivetrain packages, cams & cam side parts, big bore kits, big bore piston kits, Sportster engine parts, motor mounts, drivetrain section, engine mounts.

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Exhaust pipes listed by model, exhaust accessories, insulating wrap, mufflers, extensions, high heat spray, heat shields, clamps and mounts.

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Frames listed by style, engine mounts, fenders, struts, floorboards, foot rests, pegs, frame covers, hardtails, highway bars, kickstands, lowering kits, seats listed by model, shocks, sissy bars & pads, swingarms.. Also, Rolling Chassis Kits.

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Complete front fork assemblies, fairings & fairing accessories, fork brackets/triple trees, fork tubes, sliders, fork legs, boots, springer front ends & parts, wide glide kits.

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Air cleaners & covers, breathers, carburetors & rebuild kits, fuel injection control, gas tanks, gas caps, gas tank cleaner/prep systems, oil, oil coolers, oil line kits, oil pressure & tank gauges, oil pumps, oil tanks, , velocity stacks.

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Saddlebags listed by manufacturer, windshields

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Tires,  tire size chart, 40, 60 & 80 spoke wheels, solid wheels.

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 Motorcycle Belt Drive Kits & Parts

BDL 2

Parts shown for BDL (Belt Drives Ltd.) 2 inch open belt drive.  This kit fits Softail 90/06. EXTREME!

BDL 2" OPEN BELT DRIVE KIT FOR SOFTAIL 1990/2006 - Belt Drives Ltd.

A 2" open belt drive with ball bearing lock up clutch kit for stock to extreme horsepower motors.

Part #: M77216 - Belt Drive Kit, Fits Softail 1990/2006 ... $1462.80

Replacement Clutch:

"QUIET CLUTCH" FOR BDL BELT DRIVES

Designed to help 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 are bonded to aluminum for light weight. See below for availability of plate material. Fits all Round Dog type BDL Belt Drives

Part #: M77433- Belt Drives Ltd. Clutch Friction Plate Kit. Includes: 7) Kevlar® Friction Plates (.152" Thick) ... $105.20

Part #: M77434 - Belt Drives Ltd. Cutch Plates. Includes: 7) Splined Steel Plates (.060" Thick) ... $29.79

69 mm belt drive, open, fits dyna and softail 2007 thru 2011

69MM OPEN BELT DRIVE KIT FOR SOFTAIL AND DYNA 07/11

69mm open belt drive with ball bearing lock up clutch kit for stock to extreme horsepower motors.

52-69 tooth combo provides 1:33:1 drive ratio.

Part #: M77215 ... $1736.99

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#:M77204 ... $2199.38

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.

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 M77000 $1578.16
Big Twin 4 Speed models 1970/1978. Includes All Balls high torque 1.4 starter motor. 47-76 tooth combination. Coil Spring M77033

$1824.09

Softail Late 1986/89. Use with a 1991/Later OEM starter motor. 47-72 tooth combination Coil Spring M77032 $1578.16
Softail 1990/2006. 47-72 tooth combination. Coil Spring

M77025

$1474.66
FLT & FXR models 1990/Later. 48-72 tooth combination. Coil Spring M77034 $1578.16
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. Or just give us a call.
Includes instructions. Made in the U.S.A.

Fits Softail 1990/2006 - Part#: M77039 ... $1813.32

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#:M77440 ... our price $526.68

Polished, Outboard Bearing Support with Shroud, Fits BRUTE IV - Part#:M77441 ... our price $568.46

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#:M77316 ... $188.99

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).

Part #M73330 - Medium Duty, fits BDL Belt Drives with pressure plates machined for 12 coil springs. ... $75.46

Part #M73332 - Heavy Duty, fits BDL Belt Drives with pressure plates machined for 12 coil springs. ... $75.46

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

'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#:M79913 ... $142.50

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 M77009). Part#:M77324 ... $100.55

3 inch wide 8mm pulley. Pulley kit for 1937/1954 with tapered sprocket engine shaft (fits kit M77010). Part#:M77326 ... $111.72

3 inch wide 8mm pulley. Pulley kit for 1955/1984 with splined engine sprocket shaft (fits M77011, M77022, & M77024). Part#:M77325 ... $111.72

 

Flames Belt Guard

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

3D Flamed Belt Guard for Primo Brute IV and Brute V.

3D Flamed Guard for Primo 'Brute IV' and 'Brute V'

Primo's all new 3D Flamed belt guard keeps foreign objects out of the belt drive an away from the pulleys. The enhanced three dimensional characteristics of the guard allow you to customize it by applying paint or other effects to the recessed areas to match your existing custom paint job.

#M77212 - For Brute IV ... $488.88

#M77213 - For Brute V ... $443.70

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#:M77330 ... $55.86

Dual hole belt guard for BDL 3 inch open drive.

 

More Belt Guards can be found HERE

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.

Dual Hole. - Part#:M77327 ... $314.70

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.

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 M77501)
1-1/2"
41 & 61
132
M77500
$50.27
39 & 62
40 & 62
1937/1984 4 speed with open primary kickstart
1-1/2"
47 &76
144
M77502
$54.99
1937/1984 4 speed with open primary kickstart
2"
47 & 76
144
M77503
$86.69
1937/1984 4 speed with open primary kickstart
3"
47 & 76
144
M77504
$100.85
1965/1978 4 speed with sand cast inner primary, kick or electric start
1-1/2"
47 & 61
132
M77501
$50.47
1965/1984 4 speed with electric start
1-1/2"
45 & 68
138
M77548
$93.10
Late 1985/Later 5 speed, electric start
1-5/8"
45 & 68
138
M77511
$93.10
Late 1985/Later 5 speed, electric start
1-5/8"
48 & 68
130
M77533
$93.10
Late 1985/Later 5 speed, electric start
1-3/4
48 & 72
132
M77519
$60.52
Late 1985/Later 5 speed, electric start
1-3/4
47 & 72
141

M77520

$60.52
1955/Later 4 or 5 speed, kick or electric start
3"
47 & 72
141
M77522
$100.55
 
11MM
Years
Width
Pulley Teeth Combo
# of Belt Teeth
Part #
Price
 
1937/1984 open or closed primary kick or electric start old style belt drive
1-1/2"

29 & 44

28 & 44

96
M77505
$83.79
1937/1984 open or closed primary kick or electric start new style belt drive
1-1/2"
31 & 47
99
M77514
$54.99
1980/1984 5 speed closed primary new style belt drive
1-1/2"
31 & 47
92
M77515
$78.20
 
14MM
Years
Width
Pulley Teeth Combo
# of Belt Teeth
Part #
Price
 
1937/1984 4 speed open or closed primary, kick or electric start
1-1/2"

24 & 37 with idler

24 & 38 without idler

78
M77523
$128.48
1990/Later (Top Fuel Style)
3-3/8"
30 & 46
85
M77562
$213.20

REAR DRIVE BELTS CAN BE FOUND HERE

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Columbia, NH 03576

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