How to Install Sleeper Pro Bonneville Bobber / Speedmaster

Step by step guide on how to install the Sleeper Pro for the Triumph Bobber / Bonneville Speedmaster.

Purchase this Exhaust here: Sleeper Pro Exhaust Kit

Fitment

• Triumph Bonneville Bobber
• Triumph Bonneville Bobber Black
• Triumph Bonneville Speedmaster

Last Updated
12-11-19

REMOVAL

Note: Removal is very similar for the left and right side of the motorcycle
1 - Use a 12mm socket to slightly loosen the head pipe flange nuts.  

2 - Loosen the four (2) clamps on the catalytic converter with a 10mm wrench

3 - Use a 5 mm Allen to remove the heat shield clamp bolt (on the left-hand side, remove the heat shield mid-section.)

4 - On Speedmaster Models, use 5mm Allen and remove the rear brake lever clevis bolt and slide clevis off the shaft.  Gently move clevis and linkage out of the way.  

5 - Use a 12 mm wrench to remove the rear mounting bolt on the underside of the silencer.  

6 - Gently pull the right side heat shield form the tailpipe until it snaps free.

7 - Pull silencer outward and away from the motorcycle, until it is free from the catalytic converter and rear mount bracket.  Swing silencer end down and remove it from the motorcycle. 

8 - Use 12 mm socket to remove the rear muffler mounting bracket.  

9 - Repeat removal steps on right-hand side (exclude steps 4)

INSTALLATION

1 - Assemble British Customs kickstand bracket as shown.  Rubber stopper goes in the smaller hole on the lower side of the bend

2 - Use 8mm Allen and remove the rear bolt from the subframe on the left-hand side of the motorcycle.  

3 - Place the kickstand stopper bracket into position and secure with supplied 10 mm socket cap bolt.  

4 - Cycle the kickstand to get the bracket into proper position, then tighten and torque to 40 Nm. (30 ft-lb)

5 - Install the Sleeper Pro onto the catalytic converter, taking care not to damage gaskets in the catalytic converter. Pro Tip: It's easier to install exhausts with the back-end hanging down, then swinging it up into place. 

6 - Lift Sleeper Pro up into place and reuse 10mm bolt from factory rear mounting bracket to secure Sleeper Pro to the frame. Do not tighten at this time. Note: the orientation of the mounting bracket. The slotted part should be at the top.

7 - Use 12mm socket to tighten head pipe flange nuts and torque to 10 Nm (14 ft-lb)

8 - Tighten the clamps on the catalytic converter to 8 Nm

9 - Install heat shield to tail tailpipe.  Tighten camp firmly with 5 mm Allen and torque to 9 Nm.

10 - Go to rear mount and tighten the rear mounting bolt with 12 mm wrench to 19 Nm

11 - Reinstall rear brake clevis onto the shifter shaft. There is a dot on the shaft and hole in the clevis to ensure proper alignment.

12 - Use 5mm Allen and torque rear brake clevis bolt to 5 Nm.

13 - Repeat Steps 5-10 to install the right-hand Sleeper Pro Exhaust.  

14 - Before starting the motorcycle, check for proper clearance between the exhaust system with the frame, suspension, wiring, etc.