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

British Customs Sleeper Install on Triumph Bobber

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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.  

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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. 

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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. 

British Customs Sleeper Install on Triumph Bobber

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.

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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.

British Customs Sleeper Install on Triumph Bobber

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

British Customs Sleeper Install on Triumph Bobber

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.


Please note, comments must be approved before they are published