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2021 MINI Cooper S Convertible B46C Performance Engine Parts

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ValveSonic Cat-Back Exhaust System - Non Resonated Dual GT90 Titanium Tips

ES#3477813 - SSXM442 - ValveSonic Cat-Back Exhaust System - Non Resonated Dual GT90 Titanium Tips - 2.75" stainless steel with dual stainless polished tips - Milltek Sport - MINI

2.75" stainless steel with dual stainless polished tips

Brand:
Milltek Sport - Corporate Logo
ES#:
3477813
Mfg#:
SSXM442
Ships on Oct 22, 2026
ON SALE! SAVE 10%
$2496.99

This product was last offered at the strikethrough price on
09-18-2026

$2246.68 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Large Bore Downpipe And Hi-Flow Sports Cat - UK and EURO ONLY (NOT FOR USA CARS)

ES#4141914 - SSXM450 - Large Bore Downpipe And Hi-Flow Sports Cat - UK and EURO ONLY (NOT FOR USA CARS) - Featuring a Milltek Sport Hi-Flow Sport Cat with 2.75" Large Bore Pipe - Milltek Sport - MINI

Featuring a Milltek Sport Hi-Flow Sport Cat with 2.75" Large Bore Pipe

Brand:
Milltek Sport - Corporate Logo
ES#:
4141914
Mfg#:
SSXM450
Ships on Oct 22, 2026
ON SALE! SAVE 10%
$1602.99

This product was last offered at the strikethrough price on
09-18-2026

$1442.57 USD
This product is lifetime replacement eligible Lifetime Replacement

ValveSonic Cat-Back Exhaust System - Non Resonated Dual GT90 Polished Tips

ES#3477812 - SSXM444 - ValveSonic Cat-Back Exhaust System - Non Resonated Dual GT90 Polished Tips - 2.75" stainless steel with dual stainless polished tips - Milltek Sport - MINI

2.75" stainless steel with dual stainless polished tips

Brand:
Milltek Sport - Corporate Logo
ES#:
3477812
Mfg#:
SSXM444
Ships on Oct 22, 2026
ON SALE! SAVE 10%
$2173.99

This product was last offered at the strikethrough price on
09-18-2026

$1955.85 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated Dual GT90

ES#3477808 - SSXM425 - Cat-Back Exhaust System - Resonated Dual GT90 - 2.75" stainless steel with Dual GT90 Titanium Tips - Milltek Sport - MINI

2.75" stainless steel with Dual GT90 Titanium Tips

Brand:
Milltek Sport - Corporate Logo
ES#:
3477808
Mfg#:
SSXM425
Ships on Oct 22, 2026
ON SALE! SAVE 10%
$2076.99

This product was last offered at the strikethrough price on
09-18-2026

$1869.18 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Scorpion TunR Cat-Back Exhaust Valvetronic System - Daytona Tips

ES#4880862 - SMN033 - Scorpion TunR Cat-Back Exhaust Valvetronic System - Daytona Tips - Built to last with 304 stainless steel and engineered for dyno-proven power gains. Scorpion proves performance exhaust that sounds great. - Scorpion - MINI

Built to last with 304 stainless steel and engineered for dyno-proven power gains. Scorpion proves performance exhaust that sounds great.

Brand:
Scorpion - Corporate Logo
ES#:
4880862
Mfg#:
SMN033
Ships in 2 Business Days
$2146.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Scorpion TunR Cat-Back Exhaust Valvetronic System - STW Tips

ES#4880870 - SMN033S - Scorpion TunR Cat-Back Exhaust Valvetronic System - STW Tips - Built to last with 304 stainless steel and engineered for dyno-proven power gains. Scorpion proves performance exhaust that sounds great. - Scorpion - MINI

Built to last with 304 stainless steel and engineered for dyno-proven power gains. Scorpion proves performance exhaust that sounds great.

Brand:
Scorpion - Corporate Logo
ES#:
4880870
Mfg#:
SMN033S
Ships in 2 Business Days
$2130.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Forged Connecting Rods - SET Of Four

ES#5434623 - B48s4srod - Forged Connecting Rods - SET Of Four - High-strength forged connecting rods engineered for serious B48 performance builds - Sneed4Speed - MINI

High-strength forged connecting rods engineered for serious B48 performance builds

Brand:
Sneed4Speed - Corporate Logo
ES#:
5434623
Mfg#:
B48S4SROD
Ships in 1 Business Day
$599.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo-Back Race Exhaust System - Resonated

ES#3147475 - 831821KT5 - Turbo-Back Race Exhaust System - Resonated - Performance exhaust with stainless steal construction : 100mm Dual Slash Cut Black Tips - Supersprint - MINI

Performance exhaust with stainless steal construction : 100mm Dual Slash Cut Black Tips

Brand:
Supersprint - Corporate Logo
ES#:
3147475
Mfg#:
831821KT5
Ships on Jan 8, 2027
$6103.99 USD

High Performance Catalytic Converter With Tuning Downpipe

High quality 200 cell high flow catalytic from an OEM supplier, 2.75" downpipe. Adapters for 70mm also be needed to fit US stock midpipe. ES4265775 part number.

Brand:
HJS - Corporate Logo
ES#:
4629512
Mfg#:
90812031
Ships in 8 Business Days
$6984.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Hanger - Priced Each

Lower the vibrations from your exhaust

Brand:
HJS - Corporate Logo
ES#:
2973142
Mfg#:
18208570671
Ships in 8 Business Days
$15.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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