Deathtrap Customs A/S

The almost unlimited growth of rear tire width has driven the Custom Bike Builders to the outer limits of offsetting primary drives in existing frames. Our 55mm primary offset kit is really the limit of what is possible, extending the main shaft further will put too much torsion stress on the shaft, the 330 tire really needs a different approach. We strongly feel that instead of offsetting the primary to the extreme, it is better to leave the primary in the original position and move the final drive over to the right side. Zodiac developed a swing arm and transmission conversion kit that allows the use of a 300 or 330 wide rear tire in a stock Evolution or Twin Cam Softail frame. We offer two very cost-effective solutions, one with a RSD conversion kit, that re-uses as many stock parts as possible, and one with a RSD builder's kit. The RSD transmission conversion kit only includes the parts that are needed to convert your stock transmission into a RSD transmission. It includes parts such as: main shaft, counter shaft, shift drum, shift forks, etc. It also includes a new Billet trap door that gives room for the main drive gear. To avoid any "not wanted" load on the cast transmission housing, we have designed the trapdoor in such a way it is not only supported by the lower frame tube but also by de swing arm pivot. To make the internals of transmission stronger, the fifth gear countershaft has become an integrated part of the countershaft. We have completed the kit with the required hardware, new seals and gaskets. Some builders may not want to use their old transmission gears, for those we have a complete builders kit available. Builder's kits have the gears and shafts installed on the trap door, and include all internal parts of the transmission. You can use these in your own or new transmission housing. All RSD conversion and builders kits use a special RSD clutch actuator/pulley cover, which is separately available. Clutch actuators are available in hydraulic or cable operated. The cable operated clutch actuator works with stock Big Twin clutch cable, the hydraulic operated clutch actuator requires an 11/16" bore master cylinder. We have OEM style and Custom Style clutch master cylinders available, check out our Handlebar Controls section. Kits for up to 300 series rear tire include RSD transmission conversion or builders kit, TIG welded swing arm, stainless steel swing arm splashguard, and rear wheel axle. Kits for up to 330 series rear tire also include an offset final drive front pulley, extended clutch pushrod and a spacer ring for the clutch actuator/pulley cover. For those that prefer to use a wide wheel with 1" bearing we have bearing sleeves ZPN735416 and ZPN735417 available. A raw steel RSD belt guard is available separately.

Note:
Installation in Softail "Deuce" models requires some modification of the frame and swing arm.

Instructions

Specifications

Smart Ass RSD big wheel conversion kits for Twin Cam Softail 2000-2006

With RSD transmission conversion
Article number Description Retail price Add to list
300 Series
330 Series
With RSD transmission builders kit
Article number Description Retail price Add to list
300 Series
330 Series
Smart Ass RSD big wheel conversion kits for Evolution Softail
Conversion kits fit 1994-1999 models, Builder's kits fit 1991-1999 models

With RSD transmission conversion
Article number Description Retail price Add to list
300 Series
330 Series
With RSD transmission builders kit
Article number Description Retail price Add to list
300 Series
330 Series
Clutch actuator system (one of the two must be used!)

Note: The hydraulic operated clutch actuator requires an 11/16" bore master cylinder. These can be found elsewhere in this catalog.
Article number Description Retail price Add to list
RSD Pulley cover with cable operated clutch actuator, chrome
RSD hydraulic operated clutch actuator/pulley cover, chrome
RSD hydraulic operated clutch actuator/pulley cover, black
Replacement kit parts

RSD Transmission conversion kit
Article number Description Retail price Add to list
300 Series
330 Series
RSD Transmission builders kit
Article number Description Retail price Add to list
300 Series
330 Series
Article number Description Retail price Add to list
RSD Swing arm (TÜV approved)
RSD Stainless Steel splash guard
Rear wheel axle with nut, 3/4" x 470mm
Optional Parts
Article number Description Retail price Add to list
RSD frame support kit, fits 1989 thru 1999 Softail and Softail style frames
RSD frame support kit, fits 2000 thru 2006 Softail and Softail style frames
Pulley side bearing sleeve/spacer to use 3/4" axle with 25mm bearings
Brake side bearing sleeve/spacer to use 3/4" axle with 25mm bearings
RSD belt guard, raw steel

Recommended Retail Prices include 25% sales tax.

Prices exclude shipping, import duties and installation.

Prices are based on EUR to NOK interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.