GReddy 11001126 Revolution RS Universal Muffler 2.5in Removable Tip

Vehicle Fitment

Universal - not vehicle specific. The GReddy 11001126 is intended for custom single or dual muffler exhaust builds and for vehicles not covered by GReddy's vehicle-specific exhaust lineup. Installation requires welding and cutting. This muffler is not a bolt-on replacement for any specific vehicle application.

Fitment Notes

• Installation requires welding and cutting - this is a universal muffler, not a direct bolt-on part. The builder must cut and weld the exhaust piping to integrate the muffler into the existing or custom exhaust routing. Professional fabrication is required.
• Inlet and outlet are both 63.5mm (2.5") diameter - verify that the inlet and outlet sizes match your existing or planned piping before ordering.
• The tri-bolt removable tip design allows the included 105mm stainless tip to be removed and replaced with optional GReddy RS tips available in different lengths, stainless steel or titanium materials, and shapes - including a titanium turn-down option. The GPP RS tip silencer is also compatible with the tri-bolt mount. All optional tips and silencers are sold separately.
• This part number is the removable-tip variant of the Revolution RS 2.5" muffler. The non-removable welded-tip version of the same muffler body is part number 11001125. The welded-tip version is not compatible with optional GReddy RS tip accessories.

Features

• Straight-through internal muffler design maximizes exhaust flow by eliminating the directional changes, perforated baffles, and reverse-flow chambers used in conventional OEM muffler designs - the straight-through layout allows exhaust gas to travel directly from inlet to outlet through a packed sound-absorbing core, prioritizing flow efficiency and delivering the clean, aggressive exhaust note characteristic of the Revolution RS line.
• Tri-bolt removable tip system is the defining upgrade of the 11001126 over the otherwise identical 11001125 - the three-bolt tip retention system allows the included 105mm stainless tip to be removed and swapped for any GReddy RS tip accessory sold separately, including stainless steel tips in extended lengths, titanium tips, and the titanium turn-down tip, as well as the GPP RS silencer insert for reduced sound output. This modularity allows the exhaust note and tip appearance to be changed after installation without removing or modifying the muffler body.
• 140mm (5.5") round muffler body in a compact 300mm (11.8") length - the same body dimensions as the 11001125 - delivers strong flow performance in a form factor suitable for tight custom exhaust routing layouts where clearance between the muffler and adjacent vehicle components is limited.
• Multi-density high-temperature resistant sound suppression materials pack the straight-through muffler core - multiple packing densities allow different frequency ranges to be managed with appropriately rated material, producing a more refined and controlled sound character than single-density packing designs.
• Included 105mm (4.1") stainless steel tip with GReddy logo engraved on both faces - the tip is retained to the muffler body by three bolts and is removable without cutting or welding, allowing a clean swap to any compatible RS tip accessory. The tip is 120mm (4.7") in length.
• TIG-welded 304 stainless steel construction throughout - TIG welding produces cleaner, more precise welds at flanges and seams than MIG, and 304 stainless provides high-temperature corrosion resistance for long-term exhaust service across the thermal cycling ranges of both street and performance driving use.
• Suitable for custom single or dual muffler exhaust configurations - two 11001126 mufflers can be used together in a true dual exhaust build, or a single unit can serve as a replacement or upgrade muffler in a custom single-exit system.
• Limited Lifetime Warranty.

Specifications

• Part Number: 11001126
• Brand: GReddy
• Series: Revolution RS
• Type: Universal Muffler and Tip Set - Removable Tip
• Muffler Shape: Round
• Muffler Body Diameter: 140mm (5.5")
• Muffler Body Length: 300mm (11.8")
• Internal Design: Straight-through
• Inlet Diameter: 63.5mm (2.5")
• Outlet Diameter: 63.5mm (2.5")
• Tip Type: Stainless steel with GReddy logo engraved; tri-bolt removable
• Tip Diameter: 105mm (4.1")
• Tip Length: 120mm (4.7")
• Tip Compatibility: Accepts optional GReddy RS SUS tips, Ti tips (various lengths/shapes), Ti turn-down tips, and GPP RS silencers (all sold separately)
• Material: TIG-welded 304 stainless steel
• Internal Packing: Multi-density high-temperature resistant sound suppression materials
• Installation: Requires welding and cutting - universal, not vehicle-specific
• Warranty: Limited Lifetime

Included Components

• 1x GReddy Revolution RS 140mm Round Universal Muffler body - 300mm body length, 2.5" inlet/outlet, 304 stainless steel
• 1x 105mm stainless steel GReddy RS tip - 120mm length, tri-bolt removable, GReddy logo engraved
• Tri-bolt tip hardware

Product Description

The GReddy 11001126 is the Revolution RS 2.5" universal muffler with tri-bolt removable tip - the modular variant of GReddy's 140mm round Revolution RS universal muffler, designed for custom exhaust fabrication projects and for vehicles not covered by GReddy's vehicle-specific exhaust catalog. The muffler body is identical to the 11001125 in every dimension: 140mm (5.5") round, 300mm (11.8") long, straight-through internal design, 63.5mm (2.5") inlet and outlet. The critical difference is the tip retention system - where the 11001125 uses a welded-on non-removable tip, the 11001126 uses a tri-bolt mounting system that allows the included 105mm stainless tip to be unbolted and swapped for any compatible GReddy RS tip accessory after installation.

That removability opens the 11001126 to GReddy's full RS tip accessory ecosystem: stainless steel tips in extended lengths, titanium tips, a titanium turn-down tip, and the GPP RS silencer insert - all sold separately and all compatible with the tri-bolt mount on the 11001126. This allows a builder to install the muffler and tune both the visual tip appearance and the exhaust sound character after the muffler is welded in place, without removing or modifying the muffler body. The welded-tip 11001125 does not accept these optional accessories.

The Revolution RS straight-through core is packed with multi-density high-temperature resistant sound suppression materials - multiple packing densities manage different exhaust frequency bands to produce GReddy's characteristic aggressive but controlled exhaust note rather than the unfiltered output of an unpacked straight pipe. Installation requires welding and cutting - this is a universal muffler intended for custom fabrication, not a bolt-on replacement. Two units can be configured for a true dual exhaust build. TIG-welded 304 stainless steel throughout. Backed by a Limited Lifetime Warranty.