Primary Drive/Starters

PBK-5  3” open primary belt drive for 5-speed HD TwinCam Softails $1999


PBK-6  3” open primary belt drive for 6-speed HD Softails and Dynas $1999

These kits include Primo 3” belt, front pulley, rear pulley with complete clutch, domed clutch cover, Exile pulley cover, bearing/starter support plate and all necessary hardware. 2” version available on request. Supplied in ‘machined’ finish.


For polished finish Add $150


For black powder-coat finish - gloss, satin or textured (shown) Add $150


PBK-M  2” open primary belt drive for 6-speed HD  Dynas with mid-controls $2099

(and 6-speed TwinCam Softails with mid-controls)
This kit includes Primo 2” belt, front pulley, rear pulley with complete clutch, domed clutch cover, Exile engine rotor cover plate, aluminum side-guard, bearing/starter support plate and all necessary hardware. Belt drive has shift-shaft bushing in stock position to use with stock foot controls. Supplied in ‘machined’ finish.


For polished finish Add $150


For black powder-coat finish - gloss, satin or textured (shown) Add $150


CFC Centrifugal Clutch assembly $699

Below about 1200 rpm the clutch is automatically disengaged. This makes riding a foot-clutch bike extremely easy. You do not need to touch the foot pedal to shift from neutral to first, or to pull away from a stop. You do not need to touch the foot pedal whilst coasting to a stop and shifting down through the gears. In fact, the only time you need to physically operate the clutch pedal is whilst accelerating up through the gears (as the rpm does not drop sufficiently between shifts). We can supply the centrifugal clutch assembly fitted to any of our belt drives, but it can also be used in many other applications, including closed primaries. Call for details. 


PRIMO PRIMARY BELT KITS We use Primo components in all our belt kits and we can supply you with any product that Rivera Primo makes or distributes – simply supply us with the part number or detailed description. The super-clean primary drives that we use on our ground-up builds and Complete Bike Kits are a combination of the following parts:

A Primo  3” belt kit, an Exile Starter Kit (or Bearing Support if kick-start only), a Motor Brace Plate, a Front Pulley Cover and a domed clutch cover (not pictured but shown on virtually every bike).


P-48-76-S Primo 3” open belt kit, includes belt, pulleys and clutch. Pulley offsets available. $859


ESK Exile Starter Kit (Softail-style transmissions – not HD 6-speed) $849
A very clean, minimal billet starter-mounting kit that is confined to the transmission. Use it in conjunction with our motor brace plate, or with no motor plate at all. Kit consists of bearing support plate, starter nose, ring gear and jackshaft extension. 


EBS Exile Bearing Support – kick-only application (Softail-style transmissions – not HD 6-speed) $199


MBP Motor Brace Plate, no filter option $199


MBPF Motor Brace Plate, with spin-on filter $249

This billet aluminum brace plate mounts between the motor and the front two primary case bolt holes on the transmission. It is 3/4” thick, so although it is unobtrusive, it does provide adequate bracing. It can be used in conjunction with the Exile Bearing Support on kick-only bikes, or in conjunction with our Exile Starter Kit.


PC Exile Front Pulley Cover (5” length as used on our bikes) $349


Custom ‘length’ pulley cover Add $100

Available in various ‘lengths’ to accommodate different belt widths and offsets. We require the exact dimension from the outer edge of your front pulley to the mounting surface on the motor (or where the pulley cover will attach). We start from a CNC’d billet aluminum ‘rotor cover’ and then fashion the belt guard and side-skirt from 6061 aluminum plate before welding them to the billet piece. The welds are machined and sanded. Supplied in sanded finish. Will not fit 3.5” Primo belt kits.


PP-106-4-NH Aluminum domed clutch cover - very clean! $45


Starters

TC-1-89N2 Tech Products 2.0KW starter motor $449


SC Starter cover, billet $125


1215-0152 Kicker kit for all 5-speed Softail-style transmissions $699


1215-0153 Kicker kit for 6-speed Softail-style transmissions (not HD 6-speed) $699

These kick-start kits include polished billet aluminum end-cover, kick-arm and solid brass kick-pedal.