Audi S4 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (Non Sport Diff Cars)
2016 and Later
Active Valve Control
HJS Tuning ECE Downpipes
Fits with OE and Milltek Sport Cat back Systems (EC Approved)This product is:
EC-Approved
Hi-Flow Sports Cat and Downpipe
200 Cell HJS High Flow Sport Cat, fits with OE and Milltek Sport Cat back Systems
System Number: SSXAU673
Consists of:
Tailpipe Style:
1 x High Flow Cat Assembly
Pipe Ø: 2.50" (63.50mm) *
Cat Replacement Pipe
Cat Bypass, fits with OE and Milltek Sport Cat back SystemsThis product is:
Race/Track Only
System Number: SSXAU674
Consists of:
Tailpipe Style:
1 x Cat Bypass Assmbly
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad Cerakote Black Oval Trims
System Number: SSXAU656
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Cerakote Black Velvet Oval Tips
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-100 Burnt Titanium Trims
System Number: SSXAU653
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Burnt Titanium GT-100 Trims
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-100 Cerakote Black Trims
System Number: SSXAU651
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Cerakote Black Tips
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-100 Polished Trims
System Number: SSXAU650
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Polished Tips
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-100 Titanium Trims
System Number: SSXAU652
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Titanium Tips
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-90 Burnt Titanium Trims
System Number: SSXAU654
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x 90mm Burnt Titanium Trims
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-90 Cerakote Black Trims
System Number: SSXAU658
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Cerakote Black Tip Assembly
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-90 Polished Trims
System Number: SSXAU655
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Polished Tip Assembly
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad GT-90 Titanium Trims
System Number: SSXAU657
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Titanium Tip Assembly
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad JET-100 Carbon Trims
System Number: SSXAU724
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Carbon Jet-100 Trims (To Fit 63.5mm OD Outlets)
102 Jet
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Non-Resonated (Louder) with Quad Polished Oval Trims
System Number: SSXAU659
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x LH Front Silencer Rep Pipe
1 x RH Front Silencer Rep Pipe
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Polished Oval Tips
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-100 Cerakote Black Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU641
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Cerakote Black Tips
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad Cerakote Black Oval Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU649
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Cerakote Black Velvet Oval Tips
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-100 Burnt Titanium Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU643
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Burnt Titanium GT-100 Trims
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-100 Polished Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU640
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Polished Tips
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-100 Titanium Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU642
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Titanium Tips
Quad 100mm GT100
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-90 Burnt Titanium Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU647
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x 90mm Burnt Titanium Trims
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-90 Cerakote Black Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU645
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Cerakote Black Tip Assembly
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-90 Polished Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU644
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Polished Tip Assembly
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad GT-90 Titanium Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU646
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Titanium Tip Assembly
Quad 90mm GT90
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad JET-100 Carbon Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU723
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Carbon Jet-100 Trims (To Fit 63.5mm OD Outlets)
102 Jet
Pipe Ø: 2.50" (63.50mm) *
Cat-back
Cat Back Resonated with Quad Polished Oval Trims (EC Approval Coming Soon)This product is:
EC-Approved
System Number: SSXAU648
Consists of:
Tailpipe Style:
1 x LH Downpipe
1 x RH Downpipe
1 x Front Silencer
1 x Connecting Pipe Assembly
1 x LH Rear Silencer with Valve {Reuses motor from OE system}
1 x RH Rear Silencer with Valve {Reuses motor from OE system}
1 x LH Mounting Bracket
1 x RH Mounting Bracket
4 x Polished Oval Tips
Pipe Ø: 2.50" (63.50mm) *
* Pipe sizes may vary from part-to-part. Pipe diameters are indicative of the system as a whole and do not necessarily mean every part is of a uniform size.