K-RPM15781

Redback Exhaust for Holden Commodore 5.7L V8 VT VX VY VZ And VZ V6 Or Supercharged

Redback Exhaust.7L V8 VT VX VY VZ And VZ V6 Or Supercharged Sedans - Cat Back with Hotdogs & Rear Muffler Delete

BrandRedbackRedback Exhausts

Category: Mufflers and resonators

RRP $623.55 AUD
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Redback Exhaust for Holden Commodore 5.7L V8 VT VX VY VZ And VZ V6 Or Supercharged Sedans - Cat Back with Hotdogs & Rear Muffler Delete product image

Part specs

SKU
K-RPM15781
Supplier
Redback Exhausts
Category
Mufflers and resonators
Vehicle fitment
holden
Stock status
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Running twin hotdog resonators ahead of a rear muffler, the Redback K-RPM15781 is a cat-back exhaust listed to fit the 5.7L V8 Holden Commodore across the VT, VX, VY and VZ sedans (and VZ V6 or supercharged). The hotdog-plus-muffler layout is the point of difference: it keeps drone in check while letting the LS V8 breathe.

Why hotdogs and a rear muffler together?

The hotdogs are straight-through resonators that target resonance in the centre run, while the rear muffler handles overall volume at the exit. Combined, the K-RPM15781 aims for a freer-flowing cat-back that still travels quietly enough for daily use — the V8 note comes through without the constant boom a muffler-delete setup brings.

What does a cat-back replace here?

A cat-back swaps everything from the catalytic converters back to the tailpipe. On these VT–VZ sedans that frees up the section where the 5.7L LS engine benefits most without disturbing the factory emissions equipment up front. The cat stays where Holden put it.

Will it fit my VT–VZ Commodore Sedan?

It's listed for the 5.7L V8 Commodore sedan across VT, VX, VY and VZ, and also the VZ V6 or supercharged sedan. That's a broad family, so confirm your exact series and engine with the workshop so we match the correct centre and rear sections before ordering.

What does fitting involve in the Illawarra?

Oak Flats Muffler Men supplies and fits the K-RPM15781 in-house. We line up the cat-back joints, position both hotdogs and the rear muffler, set the hangers and check clearance along the sedan floor and over the rear axle.

Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.

Common questions

Does the K-RPM15781 fit the V6 Commodore?
It's listed for the 5.7L V8 sedans and also the VZ V6 or supercharged sedan. Confirm your exact engine and series with the workshop.
Will it drone on the highway?
The twin hotdogs target centre resonance and the rear muffler controls volume, which is designed to limit drone. We can't quote a sound figure, only the design intent.

Fitment support across the Illawarra

Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.
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Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.