Smokers – MBRP S9100 User Manual
Page 3

S9100 © 04/09
PAGE 3 OF 4
 
 
7. Mark the bed floor where the “T” Pipe is resting. MBRP Inc. recommends 
tracing around where the “T” Pipe meets the bed floor. See Figure 4. Remove 
the Stacks and “T” Pipe assembly from the bed of the truck. Find the center of 
the circle traced onto the bed floor, mark and center punch it. Go under the 
vehicle and locate the center punch mark. This marks the location where you are 
going to cut a hole for the “T” Pipe to pass through the bed of the truck. If you 
cannot find the center punch mark measure to it in the bed and transfer these 
measurements under the vehicle. Make sure that there is clearance for the 20” 
Elbow to pass by any frame cross members. 
 
 
8. Cut a hole through the truck bed providing adequate clearance around the part 
of the “T” Pipe that passes through the truck bed. MBRP Inc. recommends using 
a 5” diameter hole saw. It may be required to cut part of a bed rail away. See 
Figure 5. 
 
 
9. Set the “T” Pipe, assembled with the 13” and 37” Elbows at the desired 
height from the floor of the bed (This will set the height of the Stacks). Using 
spacers to hold the “T” Pipe and both 13” and 37” Elbows at the desired height, 
loosely attach the Stacks to the Mounting Brackets making sure that they are 
straight. This will hold the assembly steady while you line the system up to the 
exhaust under the vehicle. See Figure 6. 
 
 
10. Measure the vertical distance from the “T” Pipe slip joint to the Flex Pipe. 
Mark and cut the shorter side of the 20” Elbow to the required length so that it 
lines up with the Flex Pipe. See Figure 7. 
 
 
11. Loosely install the 20” Elbow into the “T” Pipe. Measure and mark the 
Elbow, Extension Pipe and Flex Pipe so that you will end up with the longest 
section of Flex Pipe possible. Cut the pieces to the required lengths. 
 
 
12. Attach the Elbow to the “T” Pipe slip joint and then attach the Flex Pipe to 
both the Elbow and the Mid Pipe. Be sure to slide the required Clamps over the 
Elbow and Flex Pipe before connecting them to the vehicle’s exhaust system. 
 
 
13. Make sure that the Mounting Brackets are centered on the Stacks and 
tighten fasteners holding the Mounting Brackets to the front of the truck bed. 
Tighten all the Clamps making sure the
““““
Smokers™”
Smokers™”
Smokers™”
Smokers™”
remains properly aligned.
 
 
 
 
Figure 4
 
 
Figure 5
 
 
Figure 6
Figure 7
