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Exhaust Back Boxes

Exhaust back boxes are an important component of a vehicle’s exhaust system, designed to reduce noise and improve exhaust flow. Upgrading to a high-performance back box can increase horsepower and improve the overall driving experience.

Showing results for Category: Exhaust Back Boxes

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Exhaust DPF Delete Downpipe – BMW 3 Series N47 E90 / E91 / E92 / E93 320D 04-13
Original price was: £189.99.Current price is: £179.99.
Exhaust Back Box – BMW 3 Series E46 320 / 325 / 330 M54 6 Cylinder Models 98-06
Original price was: £219.99.Current price is: £209.99.
Exhaust Back Box – Toyota Celica GT 1.8 99-05
Original price was: £209.99.Current price is: £199.99.
Rated 5.00 out of 5
Exhaust Back Box – Mazda MX5 MK3 NC 1.8 2.0 06-15
Original price was: £259.99.Current price is: £249.99.
2.5″ 200 CPI Sports Cat Downpipe – BMW Mini Cooper S R56 06-13
Original price was: £204.99.Current price is: £194.99.
Stainless Rear Back Box For Porsche Boxster S 986 2.5 / 2.7 / 3.2 96-04
Original price was: £199.99.Current price is: £189.99.
Exhaust Back Box – Toyota Celica GTS ZZT T230 1.8 99-05
Original price was: £209.99.Current price is: £199.99.
Rated 4.67 out of 5
3″ Exhaust Flexi Downpipe – Mitsubishi Lancer Evo 7 / 8 / 9 01-07
Original price was: £159.99.Current price is: £149.99.
3″ Exhaust Downpipe – Audi TT Mk1 8N 1.8T 225Bhp 98-06
Original price was: £159.99.Current price is: £149.99.
Exhaust Back Box – Rover MG-TF 1.6 02-05
Original price was: £229.99.Current price is: £219.99.
Exhaust DPF Delete Downpipe – BMW 3 5 Series X5 / X6 E90 / E91 / E60 / E70 3.0D M57 06-11
Original price was: £184.99.Current price is: £174.99.
3″ Exhaust Downpipe – Audi A4 B8 A5 Q5 S Line 2.0 TFSI 08-12
Original price was: £99.99.Current price is: £89.99.
2.5″ Exhaust Downpipe Flexi Pipe – Audi TT 8N MK1 / Volkswagen Golf MK4 3.2 V6 R32 03-06
Original price was: £149.99.Current price is: £139.99.
3″ Exhaust Downpipe – Ford Focus MK2 ST 05-11
Original price was: £174.99.Current price is: £164.99.
2″ Exhaust Downpipe – Audi TT 8N MK1 1.8T 180 BHP Quattro 98-06
Original price was: £139.99.Current price is: £129.99.
Exhaust Back Box – BMW 3 Series E36 M3 3.0 / 3.2 95-98
Original price was: £249.99.Current price is: £219.99.
3″ Exhaust Downpipe – Seat Leon Cupra R 1M 1.8T 03-06
Original price was: £159.99.Current price is: £149.99.
Exhaust Back Box – Honda Civic EG EK 1.4 / 1.6 3 Door Hatch 92-00
Original price was: £209.99.Current price is: £199.99.
Exhaust DPF Delete Downpipe – Ford Focus MK3 1.6 TDCi 12-15
Original price was: £139.99.Current price is: £129.99.
Exhaust Back Box Delete – Toyota GT86 / Subaru BRZ / Scion FR-S FA20 12+
Original price was: £229.99.Current price is: £219.99.
3″ Exhaust DPF Delete Downpipe – BMW 5 Series E60 E61 520D M47N2 05-06
Original price was: £139.99.Current price is: £119.99.
3″ Exhaust Downpipe – Ford Focus MK2 ST225 05-11
Original price was: £174.99.Current price is: £164.99.
Exhaust DPF Delete Downpipe – BMW 5 Series E60 / E61 535D 286BHP 04-10
Original price was: £209.99.Current price is: £199.99.
2.5″ Exhaust Downpipe – Ford Focus MK2 RS / Focus MK2 ST ST225 05-11
Original price was: £154.99.Current price is: £144.99.

Showing 1–24 of 62 results

Sale!

Exhaust DPF Delete Downpipe – BMW 3 Series N47 E90 / E91 / E92 /

Original price was: £189.99.Current price is: £179.99.
Sale!

Exhaust DPF Delete Downpipe – BMW 3 Series N47 E90 / E91 / E92 /

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Free flowing DPF replacement to get the most from the N47 engine Designed to improve power and torque across the entire RPM range Sold for off road and track use only     Exhaust DPF Delete Downpipe compatible with BMW 3 Series E90, E91, E92 & E93 320D 2004-2013 models is designed to replace the stock DPF with a more free flowing pipe to achieve greater gas flow through the exhaust system. This Exhaust DPF Delete Downpipe is an effective modification for

Original price was: £189.99.Current price is: £179.99.
Out of stock

Exhaust Back Box – BMW 3 Series E46 320 / 325 / 330 M54 6

Original price was: £219.99.Current price is: £209.99.
Out of stock

Exhaust Back Box – BMW 3 Series E46 320 / 325 / 330 M54 6

Manufactured from high quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Mirror polished finish all the way through, not just the tailpipes 3" Polished tailpipes designed to fit the OEM rear valance Fantastic high quality stainless steel exhaust that we guarantee you will not be disappointed with

Original price was: £219.99.Current price is: £209.99.
Sale!

Exhaust Back Box – Toyota Celica GT 1.8 99-05

Original price was: £209.99.Current price is: £199.99.
Sale!

Exhaust Back Box – Toyota Celica GT 1.8 99-05

Gravity Performance exhaust back box deletes are designed to fit OEM mounting points for perfect fitment. Gravity Performance back boxes are the most straight forward, cost effective modificiations you can choose to enhance your car's sound. Manufactured from high quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Mirror polished and 2.5" all the way through with single 4" tailpipe Designed to fit using the OEM donut gasket and spring bolts Comes complete with removable silencer bung in the tail pipe for volume control     Exhaust Back box compatible with Toyota Celica GT

Original price was: £209.99.Current price is: £199.99.
Sale!

Exhaust Back Box – Mazda MX5 MK3 NC 1.8 2.0 06-15

Original price was: £259.99.Current price is: £249.99.
Sale!

Exhaust Back Box – Mazda MX5 MK3 NC 1.8 2.0 06-15

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability 3" Polished tailpipes designed to fit the OEM rear valance Designed to improve power and torque across the entire RPM range Noticeably improves throttle response

Original price was: £259.99.Current price is: £249.99.
Sale!

2.5″ 200 CPI Sports Cat Downpipe – BMW Mini Cooper S R56 06-13

Original price was: £204.99.Current price is: £194.99.
Sale!

2.5″ 200 CPI Sports Cat Downpipe – BMW Mini Cooper S R56 06-13

Manufactured from high quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability CNC machined flanges for strong, solid support and an accurate fit Designed to reduce turbo spool and increase horsepower capability Built in non type approved 200cpi sports cat     2.5" 200 CPI Sports Cat Downpipe compatible with BMW Mini Cooper S R56 06-13, built from high quality Stainless Steel and TIG welded to ensure durability, offers reduced turbo spool to accommodate greater horsepower gains. Our 2.5" 200 CPI Sports Cat Downpipe includes CNC machined flanges to provide a solid system and

Original price was: £204.99.Current price is: £194.99.
Sale!

Stainless Rear Back Box For Porsche Boxster S 986 2.5 / 2.7 / 3.2 96-04

Original price was: £199.99.Current price is: £189.99.
Sale!

Stainless Rear Back Box For Porsche Boxster S 986 2.5 / 2.7 / 3.2 96-04

2" Bore Throughout with Twin 3" Tailpipes A free flowing exhaust is a great way to get the most out of the Boxster engine Manufactured from Mandrel bent T304 grade stainless steel Engineered to improve throttle response across the entire RPM range Fully polished to complement the appreciating classic

Original price was: £199.99.Current price is: £189.99.
Sale!

Exhaust Back Box – Toyota Celica GTS ZZT T230 1.8 99-05

Original price was: £209.99.Current price is: £199.99.
Sale!

Exhaust Back Box – Toyota Celica GTS ZZT T230 1.8 99-05

Gravity Performance exhaust back box deletes are designed to fit OEM mounting points for perfect fitment. Gravity Performance back boxes are the most straight forward, cost effective modificiations you can choose to enhance your car's sound. Manufactured from high quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Mirror polished and 2.5" all the way through with single 4" tailpipe Designed to fit using the OEM donut gasket and spring bolts Comes complete with removable silencer bung in the tail pipe for volume control     This Stainless Steel Exhaust Back Box, compatible with

Original price was: £209.99.Current price is: £199.99.
Sale!

3″ Exhaust Downpipe – Audi TT Mk1 8N 1.8T 225Bhp 98-06

Original price was: £159.99.Current price is: £149.99.
Sale!

3″ Exhaust Downpipe – Audi TT Mk1 8N 1.8T 225Bhp 98-06

Gravity Performance decats are made to completely replace the stock catalytic converter eliminating all restrictions. Our Performance decats improve throttle response and allow for improved exhaust flow increasing power and torque. Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability 3" - 2 x 2" Bore throughout for optimum exhaust flow Built in flexi joint helps reduce exhaust strain Fully polished throughout and designed to fit the OEM exhaust     Our 3" Exhaust Downpipe compatible with Audi TT Mk1 8N 1.8T 225Bhp 98-06 is an ideal replacement for the standard

Original price was: £159.99.Current price is: £149.99.
Out of stock

3″ Exhaust Flexi Downpipe – Mitsubishi Lancer Evo 7 / 8 / 9 01-07

Original price was: £159.99.Current price is: £149.99.
Out of stock

3″ Exhaust Flexi Downpipe – Mitsubishi Lancer Evo 7 / 8 / 9 01-07

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability 3" downpipe to fit most aftermarket exhaust system Built in flexi joint helps reduce exhaust strain Fully polished throughout to compliment the appreciating classic

Original price was: £159.99.Current price is: £149.99.
Sale!

Exhaust Back Box – Rover MG-TF 1.6 02-05

Original price was: £229.99.Current price is: £219.99.
Sale!

Exhaust Back Box – Rover MG-TF 1.6 02-05

Gravity Performance Exhaust Back Boxes are designed in house to fit OEM mounting points for perfect fitment to your vehicle. Our Gravity Performance Exhausts greatly enhance the sound with a captivating exhaust note while also increasing performance. Manufactured from highest quality T304 grade stainless steel 2.5" bore throughout with Twin 3" tailpipes Mandrel bent and fully TIG welded for strength and durability Free flowing replacement for the restrictive standard back box 3" Polished tailpipes designed to fit the OEM rear valance     Exhaust Back Box compatible with Rover MG-TF 1.6l 2002-2005 models is made from Stainless Steel and has

Original price was: £229.99.Current price is: £219.99.
Sale!

Exhaust DPF Delete Downpipe – BMW 3 5 Series X5 / X6 E90 / E91

Original price was: £184.99.Current price is: £174.99.
Sale!

Exhaust DPF Delete Downpipe – BMW 3 5 Series X5 / X6 E90 / E91

Manufactured from highest quality T304 grade stainless steel Mandrel Bent and fully TIG welded for strength and durability Free flowing Dpf Replacement to get them most from the M57 engines Designed to improve power and torque across the entire RPM range Sold for off road and track use only

Original price was: £184.99.Current price is: £174.99.
Sale!

3″ Exhaust Downpipe – Audi A4 B8 A5 Q5 S Line 2.0 TFSI 08-12

Original price was: £99.99.Current price is: £89.99.
Sale!

3″ Exhaust Downpipe – Audi A4 B8 A5 Q5 S Line 2.0 TFSI 08-12

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully tig welded for durability Fully polished with a 3" bore throughout Downpipe to fit between the vehicles turbo and catalytic converter Designed to fit the OEM and most aftermarket exhaust systems

Original price was: £99.99.Current price is: £89.99.
Sale!

2.5″ Exhaust Downpipe Flexi Pipe – Audi TT 8N MK1 / Volkswagen Golf MK4 3.2

Original price was: £149.99.Current price is: £139.99.
Sale!

2.5″ Exhaust Downpipe Flexi Pipe – Audi TT 8N MK1 / Volkswagen Golf MK4 3.2

Manufactured from highest quality T304 grade stainless steel Mandrel Bent and fully TIG welded for strength and durability Designed with Flexi's to reduce any strain on the exhaust system Fully polished throughout complementing the appreciating classic Designed to fit the OEM and most aftermarket exhaust systems

Original price was: £149.99.Current price is: £139.99.
Sale!

Exhaust Back Box – BMW 3 Series E36 M3 3.0 / 3.2 95-98

Original price was: £249.99.Current price is: £219.99.
Sale!

Exhaust Back Box – BMW 3 Series E36 M3 3.0 / 3.2 95-98

Manufactured from highest quality T304 grade stainless steel 2.5" bore throughout with Twin 2.5" tailpipes Mandrel bent and fully TIG welded for strength and durability Designed to improve power and torque across the entire RPM range 2.5" Polished tailpipes designed to fit the OEM rear valance

Original price was: £249.99.Current price is: £219.99.
Sale!

2″ Exhaust Downpipe – Audi TT 8N MK1 1.8T 180 BHP Quattro 98-06

Original price was: £139.99.Current price is: £129.99.
Sale!

2″ Exhaust Downpipe – Audi TT 8N MK1 1.8T 180 BHP Quattro 98-06

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Designed with a flexi reducing any strain on the exhaust system Fully polished throughout with a 2" bore Designed to fit the Audi's original exhaust system

Original price was: £139.99.Current price is: £129.99.
Sale!

3″ Exhaust Downpipe – Ford Focus MK2 ST 05-11

Original price was: £174.99.Current price is: £164.99.
Sale!

3″ Exhaust Downpipe – Ford Focus MK2 ST 05-11

Manufactured from high quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Designed with a 3" bore to meet most aftermarket exhaust systems Larger bore than the OEM to increase exhaust flow Designed with a flexi to reduce strain on the exhaust system Our 3" Exhaust Downpipe compatible with Ford Focus MK2 ST 05-11 is an ideal modification to add to an aftermarket exhaust. Due to its larger than OEM bore, the 3" Exhaust Downpipe further improves your cars throttle response and delivers increased power and torque.

Original price was: £174.99.Current price is: £164.99.
Sale!

3″ Exhaust Downpipe – Seat Leon Cupra R 1M 1.8T 03-06

Original price was: £159.99.Current price is: £149.99.
Sale!

3″ Exhaust Downpipe – Seat Leon Cupra R 1M 1.8T 03-06

Gravity Performance decats are made to completely replace the stock catalytic converter eliminating all restrictions. Our Performance decats improve throttle response and allow for improved exhaust flow increasing power and torque. Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability 3" - 2 x 2" Bore throughout for optimum exhaust flow Built in flexi joint helps reduce exhaust strain Fully polished throughout and designed to fit the OEM exhaust     3" Exhaust Downpipe compatible with Seat Leon Cupra R 1M 1.8T 03-06, manufactured from T304 stainless steel and TIG welded

Original price was: £159.99.Current price is: £149.99.
Sale!

Exhaust Back Box – Honda Civic EG EK 1.4 / 1.6 3 Door Hatch 92-00

Original price was: £209.99.Current price is: £199.99.
Sale!

Exhaust Back Box – Honda Civic EG EK 1.4 / 1.6 3 Door Hatch 92-00

Manufactured from high quality T304 stainless steel Removable exhaust silencer bung for volume control 2.25" bore with a 4" tailpipe for maximum exhaust flow Gives your Civic a nice sporty exhaust tone Mirror polished finish all the way through, not just the tailpipe

Original price was: £209.99.Current price is: £199.99.
Out of stock

Exhaust DPF Delete Downpipe – Ford Focus MK3 1.6 TDCi 12-15

Original price was: £139.99.Current price is: £129.99.
Out of stock

Exhaust DPF Delete Downpipe – Ford Focus MK3 1.6 TDCi 12-15

Gravity Performance DPF deletes instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our DPF deletes are designed to be direct replacements for the OEM catalytic converter, ensuring smooth installation every time. Manufactured from highest quality T304 grade stainless steel Mandrel Bent and fully TIG welded for strength and durability Free flowing DPF replacement to get them most from the 1.6 Diesel engine Designed to improve power and torque across the entire RPM range Sold for off road and track use only

Original price was: £139.99.Current price is: £129.99.
Out of stock

3″ Exhaust DPF Delete Downpipe – BMW 5 Series E60 E61 520D M47N2 05-06

Original price was: £139.99.Current price is: £119.99.
Out of stock

3″ Exhaust DPF Delete Downpipe – BMW 5 Series E60 E61 520D M47N2 05-06

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Free Flowing DPF replacement to get the most from the M47 engine Designed to improve power and torque across the entire RPM range Sold for off road and track use only

Original price was: £139.99.Current price is: £119.99.
Sale!

Exhaust Back Box Delete – Toyota GT86 / Subaru BRZ / Scion FR-S FA20 12+

Original price was: £229.99.Current price is: £219.99.
Sale!

Exhaust Back Box Delete – Toyota GT86 / Subaru BRZ / Scion FR-S FA20 12+

Manufactured from highest quality T304 grade stainless steel Free flowing increasing volume of the 2.0L 4U-GSE / FA20 boxer engine Mirror polished all the way through, not just the tailpipes! 4" Polished tailpipes to fit the OEM rear valance Easy and simple installation, ideal for any home Mechanic

Original price was: £229.99.Current price is: £219.99.
Sale!

3″ Exhaust Downpipe – Ford Focus MK2 ST225 05-11

Original price was: £174.99.Current price is: £164.99.
Sale!

3″ Exhaust Downpipe – Ford Focus MK2 ST225 05-11

Manufactured from high quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Designed with a 3" bore to meet most aftermarket exhaust systems Larger bore than the OEM to increase exhaust flow Designed with a flexi to reduce strain on the exhaust system 3" Exhaust Downpipe compatible with Ford Focus MK2 ST225 05-11, featuring TIG welding and T304 Stainless Steel, also has a built-in flexi meaning this part not only offers performance benefits, but reliability and durability too. Match this 3" Exhaust Downpipe with most aftermarket exhausts to see even greater exhaust flow with

Original price was: £174.99.Current price is: £164.99.
Sale!

2.5″ Exhaust Downpipe – Ford Focus MK2 RS / Focus MK2 ST ST225 05-11

Original price was: £154.99.Current price is: £144.99.
Sale!

2.5″ Exhaust Downpipe – Ford Focus MK2 RS / Focus MK2 ST ST225 05-11

Manufactured from highest quality T304 grade stainless steel Mandrel bent and fully TIG welded for strength and durability Fully Polished with a 2.5" bore throughout  Designed with a Flexi to withstand any strain on the system Designed to fit the OEM and most aftermarket exhaust systems

Original price was: £154.99.Current price is: £144.99.
Sale!

Exhaust Flexi Pipe – Ford Fiesta MK6 ST150 04-08

Original price was: £104.99.Current price is: £94.99.
Sale!

Exhaust Flexi Pipe – Ford Fiesta MK6 ST150 04-08

Manufactured from highest quality T304 grade stainless steel Mandrel Bent and fully TIG welded for strength and durability CNC machined flanges for strong, solid support and an accurate fit Direct replacement for the OEM pipe which can be prone to failing

Original price was: £104.99.Current price is: £94.99.