# 2 HD 2000 & UP ISS INSTALLATION INSTRUCTIONS

1. Secure your bike and remove rear wheel assembly, brake and pulley. 2. Jack up Bike frame to about 4 or 5 inches 3. Install the modified swingarm or mounting brackets to bike frame4. Bolt down your pulley and our brake rotor flush against the differential using the provided bolts and RED Loctite.

Preload sleeves will be installed on differential when shipped. (Make sure to use the proper preload pipe spacers which shoulder against the suspension bearings to keep the differential from moving side to side. 5/8” of the differential will insert into the axle bearing. If preload spacers are not properly installed the differential will move side to side and it will damage the unit and this will void the warranty)

(If you use the stock 1999 and under HD pulley you will need to use only the 2” x 1 1/8” preload pipe spacer and Torque bolts to stock HD specs on to the differential.)(If you use a 2000 and up HD pulley you would have to use both the provided small 2” x 3/8” preload pipe spacer pulley spacer along with the standard 2”x 1 1/8’ preload pipe spacer. You may need to counter bore the pulley bolt holes to allow the pulley bolts to clear the bearing on suspension.)(If you use a chain and sprocket you may need to space the sprocket out from the differential using a pulley spacer to align it with the transmission sprocket and/or use a dished sprocket. The preload sleeves may need to be cut down allow 5/8” of the differential to insert into the axle bearing. Sprockets will vary in thickness. )

PRELOAD PIPE SPACERS DIFFERENTIAL WITH PULLEY AND ROTOR

5. Insert pulley side of the ISS (long axle shaft) into the differential until flush with pre-load sleeve. Make sure the pulley bolts do not touch the bearing. If bolts touch the bearing the clearance can be adjusted by adding or removing washers/lock-washers, or counter boring the pulley bolt holes to allow the bolts to clear the bearing when the differential is installed.

6. Position the ISS and differential into place behind bike, but leave the belt off of the pulley and keep the belt toward the center of the differential to allow for manipulation of the ISS

7. Install the brake side of the ISS (short axle) into the brake rotor side of the differential, make sure the differential is fully seated in the axle bearings. The 2 sides can be drawn together to fully seat the differential in the bearings by tightening all the 11-1/4" bars evenly around the suspension. Rear bars must be removed to put belt on pulley.

8. Block up the ISS high enough to align holes in the H-plates with the holes on the swingarm brackets or jack the bike down to meet the suspension.

9. Now pin the ISS to the top hole on the Swingarm mounting brackets using the 11-1/4" shaft bolts going through the top unthreaded holes on the front of the H-plates on the suspension.

10. Once the suspension is pinned in place with the bolts install the top front 11-1/4" spacer shaft between the H-plates using the 1-3/4 " bolts. The 1/2" x 1-3/4" bolts for the bars will pass through the top 1/2" hole and top slot on the Swingarm brackets and through the unthreaded holes on the top and bottom of the H-Plate. (NOTE: Flats on spacer bars are provided for attachment of accessories)

11. Pivot the suspension forward until the belt will roll onto the pulley (the two 11-1/4” shafts must be removed in the rear of the suspension to do this) once belt is on pulley install the 3 remaining 11-1/4" spacer shafts using provided bolts

12. If your bike has a swing arm you will need to make a strut to eliminate the up and down movement in the swingarm so the only suspension will be in the rear end. The strut length will determine the ride height of the trike and clearance of the kit. Block the ISS up high enough to attach struts to the stock shock mount or fender strut. The struts bolt on the outside of the H-bracket in the 1/2” fine threaded holes next to the front shock tower of the on the ISS. Attach the top of the strut to the stock shock mount or a hole in the fender strut that will allow the strut to be in a vertical position and strong enough to support the weight of the bike.

*(For bikes with a rubber mount motor (FXD, FLH, FXR or 04 and later XL Sportsters) use the provided rod end Rubber Mount Struts, install same as above struts. Adjust in or out to set ride height, Standard length about 7-3/8” – 8-3/8” hole to hole)

RUBBER MOUNT STRUTS STRUT LOCATION FLH

13. Hook up the airline kit so the 2 Right shocks and 2 Left shocks (front and back) are on separate air T fittings. The right and left side shocks should have separate air line systems. (refer to your airline kit instructions for airline assembly) The valves on the shocks must be turned away from suspension to avoid contact with the A-arm. For heavy or fully loaded bikes with Body Kits such as FLH and Hondas add 45-60 lbs of air, on smaller trikes or trikes with the Open Fender look start with 20 lbs of air and adjust from there to your preference (check pressure before riding, do not ride without any air) We also put less air (20-25) in the tires to give more cushion for the ride.

14. Install lug studs into wheel hub by loading them through the slot under the spindle like a revolver. 3 Bolt patterns on hub 5 x 4-1/4", 5 x 4-1/2", 5 x 4-3/4" Use a lug nut and spacer to draw studs into wheel hub, spacer must be larger than shoulder of stud. Studs are a 12 mm x 1.5 thread pitch (make sure the wheel fits the hub as well as making sure the lug nut will not bottom out on stud with your wheel installed).

15. Install the Wilwood brake, add or remove thin shim spacer to center caliper on our rotor. Brakes must be bench bled using a vacuum bleeder or power bleeder. Put a piece of 3/8” thick steel between the brake pads to keep pistons from moving when bleeding. Maneuver caliper vertically and bleed all valves to remove air bubbles. (If done properly Brakes will not be spongy.) Bleed the system and then come back 30 minutes later once everything is settled to make sure there is no sponginess in the pedal. Once installed and bled drive a short distance (50 -75 yards) in first gear with the rear brake applied to help seat the pads in the rotor.

16. It is very important to set the belt tension properly, the belt should be looser than a stock motorcycle. When you are finished there should be about 1" INCH OF UP AND DOWN PLAY on the bottom half of the belt. You do not want to over tighten the belt because it can cause bearing failure and damage to the differential voiding the warranty.

17. Last step tighten down all bolts, re-check belt tension and air pressure before riding.

RECOMENDATIONS

-We always recommend adding Raked Triple Trees to help ease the steering of any trike. The trike will work with stock trees but it is much harder to steer and there can be a front end wobble. We use a 7 degree rake on all of our trikes but our FLH has a 4.5 degree rake. 7 degree rake is the optimal degree of rake for all Harley trikes with stock tubes except the Baggers. When installing our trees we do not use a steering dampener. We recommend to over tighten the neck stem, much tighter than a motorcycle to avoid front end wobble. The front end should turn freely with a small amount of resistance which will dampen the front end.

-The stock exhaust may or may not work with the kit. The exhaust will need to exit below or in front of the suspension. When installing a body kit we provide exhaust extensions that allow the exhaust to drop down some and exit out the back. We found that Vance & Hines has a couple pair of exhaust systems that will work with our kits (Short Shots and Big Radius). Whatever you choose keep in mind that it will have to avoid the suspension and or the body kit.

-The wheels and tires will be dictated by the type of body kit or fenders that are installed. We use a high positive offset wheel to set the wheel further in toward the suspension. The body kit is more forgiving to various wheel and tire sizes, but the fenders need a specific and specific tire size to clear fender. We recommend using a 18 x 9.5 rim with a +58 mm offset and a 245/35/18 tire for the fenders and 18 x 9 rim with a +24mm offset and a 245/35/18 tire for the body kits. We will also only put 20-25 lbs of air in the tires to give a little more cushion.

MAINTANANCE

-After 5000/10000/20000 miles go over all bolts to ensure they are tight. Jack suspension in the air and rotate wheels to make sure everything is working properly such as the bearings and CV joints. Inspect CV boots to make sure they are intact. Check for proper belt tension. Inspect air lines to make sure they are intact and hold pressure. The differential and CV joints are all sealed so they should not need any grease added. We use a CV joint molly grease in the CV joints and differential.