NEW!

2 5/8" Open Belt Drive

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 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 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

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:

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*

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*

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' 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

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" 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*

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.

    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