Installation Guide

Home / Performance / Exhaust / Magnaflow High Tuck Exhaust System for INEOS Grenadier by Agile Offroad Installation Guide

Magnaflow High Tuck Exhaust System for INEOS Grenadier by Agile Offroad

SKU: G21-1000

Installation Manual PDF Download Video Additional Information

Installation Manual

The Magnaflow High Tuck Exhaust System for the INEOS Grenadier is engineered to increase rear ground clearance and work seamlessly with Agile Offroad’s Rear High Tuck Skid Plate. This system tucks the muffler and tailpipe high and tight above the frame line, significantly improving your departure angle and off-road capability.

Built from durable 409 stainless steel, this 3” exhaust features mandrel-bent tubing for optimized airflow and a straight-through resonator and muffler for smooth, consistent tone and reduced restriction. Unlike louder, aggressive systems, this exhaust delivers a subtle performance tone—slightly more pronounced than stock, but refined to preserve the upscale sound quality you expect from a vehicle like the Grenadier.

Designed as a bolt-on, direct-fit solution, it installs cleanly with stainless steel band clamps and factory mounting points—no welding or cutting required. This is the ideal exhaust upgrade for those looking to combine improved off-road performance with trail-proven armor compatibility and a sound profile that stays true to the vehicle’s premium feel.

SKU: G21-1000

PARTS INCLUDED

  • 1 x Magnaflow High Tuck Exhaust System

TOOLS NEEDED

  • T45 Torx Bit
  • 13mm Socket
  • 15mm Socket
  • 16mm Socket
  • 16mm Open Wrench
  • E12 Socket
  • Hammer
  • Pry Bar
  • Reciprocating Saw w/8” Blade
  • Exhaust Hanger Removal Plier (Lisle 38350)

INSTALLATION TIME: 3 Hours

Installation Steps

1

Use a T45 Torx bit to remove the ten rear skid plate screws.

2

Completely remove the skid plate.

3

Cutting the rear section of the exhaust will facilitate the removal. We marked the best cut location using blue masking tape.

4

Use a reciprocating saw to cut the exhaust pipe as shown.

5

Use an E12 socket to remove the left and right muffler hangers and the over axle pipe hanger.

6

Remove the muffler and over axle pipe assembly.

7

The remaining front pipe assembly is held on by two hangers and a collector clamp.

8

Use a 13mm socket to remove the center hanger nut.

9

Use a 16mm socket to loosen the collector clamp.

10

Use a hammer to tap the clamp bolt loose then completely remove the bolt, nut and washer assembly. Make a note of the bolt, washer and nut sequence. Use a pry bar to open collector clamp.

11

Use an E12 socket to remove the rear pipe hanger.

12

Drop the pipe assembly down at the rear to dislodge it from the collector.

13

Once dislodged, completely remove pipe assembly.

14

Familiarize yourself with the components.

15

Layout the new exhaust.

16

Use exhaust hanger removal pliers to remove the factory hangers. Each hanger is position specific, so it is best to remove each hanger at a time.

17

Install the removed hanger onto the resonator assembly as shown.

18

Install the removed hanger onto the over axle pipe assembly as shown.

19

Install the removed hangers onto the muffler assembly as shown.

20

To facilitate assembly, mark the 3” slip pipes at 3 inches.

21

Install the inlet pipe assembly onto the front collector and reinstall the clamp nut and bolt assembly. Hand tighten only.

22

Reinstall the center hanger nut. Hand tighten only.

23

Install the resonator assembly onto the inlet pipe assembly using the supplied 3” Torca clamp. Slide pipe in approx. 3” using the previously marked locations as guide.

24

Use the factory hanger bolt to install resonator hanger.

25

Install over axle pipe assembly onto resonator assembly using the supplied 3” Torca clamp. Slide pipe in approx. 3” using the previously marked locations as guide.

26

Use the factory hanger bolt to install over axle pipe assembly hanger.

27

Install the muffler assembly onto the over axle pipe assembly using the supplied 3” Torca clamp. Slide pipe in approx. 3” using the previously marked locations as guide.

28

Install the tail pipes onto the muffler assembly using the supplied 2.5” Torca clamps.

29

Adjust the position of the tail pipes and then tighten clamps.

30

Make sure the exhaust system is fully positioned then fully tighten all clamps and hangers.

TORQUE SPECS

  • Factory Collector Clamp: 25 Ft Lbs
  • Front Hanger Nut: 20 Ft Lbs
  • 2.5” Torca Clamps: 40 Ft Lbs
  • 3.0” Torca Clamps: 40 Ft Lbs
  • Factory Hangers: 20 Ft Lbs

31

Reinstall the factory skid plate using the factory hardware. Torque to 20 Ft Lbs.

1 Installing the Rear High Tuck Skid Plate (G13-1000X)

Use a 16mm socket and open wrench to remove the factory skid plate mounting bracket hardware.

2

Completely remove brackets.

3

Identify the left and right brackets.

4

Install the supplied left and right skid plate brackets to the upper frame mounts using the supplied M10 x 1.5 nuts and bolts. Hand tighten only.

5

Install the AO High Tuck Skid Plate using 8 of the supplied M8 x 1.25 bolts. Hand tighten only.

6

Bolt the AO High Tuck Skid Plate onto the front mounting brackets using the supplied M8 x 1.25 bolts and nuts. Fully tighten all hardware. Torque all M8 hardware to 18 Ft Lbs and all M10 hardware to 35 Ft Lbs.

7

Vehicles equipped without a hitch mount can install the supplied removable hitch receiver cover using the four inner mounting bolts.