Quantum Performance Engineering
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1.8T Conversion Downpipes

QPEng conversion downpipes are professionally manufactured entirely from stainless steel to our design and specification. They feature a lambda probe boss and a braided flexible section for excellent durability and maximum performance.

The mandrel bent and TIG welded construction keeps flow restrictions to a minimum and the highly polished finish ensures aesthetics worthy of any show car.

In each case the tail end of the downpipe is long enough to mate up with the converted cars original or aftermarket exhaust system, (i.e. reaches approximately as far as the gear shifter). All downpipes are supplied with a plain 2.5" end and adaptors are available to allow fitment to almost any exhaust system. Models originally fitted with a catalytic converter will require some modification since the downpipes are not available with the triangular flanges



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2.5" Stainless Steel Double Ended Sleeve

£7.00
With an ID of 63.5mm the double ended sleeve slips over any 2.5" exhaust pipe, allowing easy connection of downpipes 2.5" exhausts that have no flared end section. 
Product Details...



2.5" Stainless Steel Downpipe for K03/K03s Turbo into Golf 1

£220.00
£176.00
You Save: 20.00%
This version of conversion downpipe is suitable for fitting any 1.8T engine with a K03 or K03s turbo into Mk1 Golf/Cabrio, Mk1 Jetta and all Sciroccos. 
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2.5" Stainless Steel Downpipe for K03/K03s Turbo into Golf 2/3

£200.00
£160.00
You Save: 20.00%
This version of conversion downpipe is suitable for fitting any 1.8T engine with a K03 or K03s turbo into Mk2 and 3 Golfs, plus Corrados and Mk2 Seat Ibiza. 
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2.5" Stainless Steel Downpipe for K04 Turbo into Golf 2/3

£250.00
£200.00
You Save: 20.00%
This downpipe is suitable for fitting any 1.8T engine with a K04 turbo into Mk2 and 3 Golfs, plus the Corrado and Mk2 Seat Ibiza. It features a 2 piece design that allows easy fitment with the full engine and running gear in place. 
Product Details...



2.5" to 2.25" to 2" Stainless Steel Stepped Adaptor

£10.00
****NEW DESIGN**** The stepped adaptor is produced from stainless steel and allows the range of QPEng downpipes to be connected to almost any exhaust system. 
Product Details...




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Featured Products

2.5" Stainless Steel Downpipe for K03/K03s Turbo into Golf 1

£220.00
£176.00
You Save: 20.00%
2.5

This version of conversion downpipe is suitable for fitting any 1.8T engine with a K03 or K03s turbo into Mk1 Golf/Cabrio, Mk1 Jetta and all Sciroccos.

2.5" Stainless Steel Downpipe for K04 Turbo into Golf 2/3

£250.00
£200.00
You Save: 20.00%
2.5

This downpipe is suitable for fitting any 1.8T engine with a K04 turbo into Mk2 and 3 Golfs, plus the Corrado and Mk2 Seat Ibiza. It features a 2 piece design that allows easy fitment with the full engine and running gear in place.



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