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Audi B8 RS5 4.2L

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Audi B8 RS5 4.2L Performance Parts & Upgrades

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Rear Differential Mount Insert Kit - Black

ES#4620269 - 8K0599381H - Rear Differential Mount Insert Kit - Black - Enhance your driving experience by filling the bushing void. - JH Motorsports - Audi

Enhance your driving experience by filling the bushing void.

Brand:
JH Motorsports - Corporate Logo
ES#:
4620269
Mfg#:
8K0599381H
Ships in 2 Business Days
$58.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Scorpion Half Exhaust System - Resonated

2.5" half-exhaust built to last with 304 stainless steel and engineered for dyno-proven power gains

Brand:
Scorpion - Corporate Logo
ES#:
3969347
Mfg#:
SAU048
Ships in 3 Business Days
$1966.99 USD
Free Shipping

Front Big Brake Kit - Stage 2 - 2-Piece Rotors (380x34)

ES#2793048 - 003883ECS03KT - Front Big Brake Kit - Stage 2 - 2-Piece Rotors (380x34) - A direct fit kit that utilizes your stock calipers with ECS stainless steel lines & ECS EP24 Enthusiast Performance pads - ECS - Audi

A direct fit kit that utilizes your stock calipers with ECS stainless steel lines & ECS EP24 Enthusiast Performance pads 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2793048
Mfg#:
003883ECS03KT
Ships on Dec 24, 2026
Auto Notify
ON SALE!
$1986.99

This product was last offered at the strikethrough price on
06-13-2026

$1927.38 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Wheel Spacer & Bolt Kit - 10mm With Conical Seat Bolts

ES#3568762 - 002411ecs02aKT8 - Wheel Spacer & Bolt Kit - 10mm With Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
3568762
Mfg#:
002411ECS02AKT8
In Stock
ON SALE! SAVE 15%
$160.99

This product was last offered at the strikethrough price on
06-13-2026

$136.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Carrier Mount Insert Kit - Black

ES#4620258 - 8K0599257N - Rear Differential Carrier Mount Insert Kit - Black - Enhance your driving experience by filling the bushing void. - JH Motorsports - Audi

Enhance your driving experience by filling the bushing void.

Brand:
JH Motorsports - Corporate Logo
ES#:
4620258
Mfg#:
8K0599257N
Ships in 5 Business Days
$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Density Line Adjustable Upper Control Arm Kit - Track Spec

ES#3141743 - 034-401-1009 - Density Line Adjustable Upper Control Arm Kit - Track Spec - Track Spec: Perfect for those who are low, and looking for even more negative camber for better track performance. - 034Motorsport - Audi Porsche

Track Spec: Perfect for those who are low, and looking for even more negative camber for better track performance.

Brand:
034Motorsport - Corporate Logo
ES#:
3141743
Mfg#:
034-401-1009
Ships in 3 Business Days
$626.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing Cap

ES#2635805 - 003270ECS01A - Billet Aluminum Oil Filter Housing Cap - Upgrade your weak plastic V8 4.2/V10 5.2 FSI oil filter cap - ECS - Audi Volkswagen

Upgrade your weak plastic V8 4.2/V10 5.2 FSI oil filter cap 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2635805
Mfg#:
003270ECS01A
Ships on Oct 28, 2026
Auto Notify
ON SALE! SAVE 20%
$177.99

This product was last offered at the strikethrough price on
06-13-2026

$142.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Wheel Spacer Pair - 5mm

ES#3618563 - 034-604-7004 - 034Motorsport Wheel Spacer Pair - 5mm - Designed to fit most Audi and BMW vehicles with a 66.5mm center bore and 5x112mm wheel bolt patterns. - 034Motorsport - Audi

Designed to fit most Audi and BMW vehicles with a 66.5mm center bore and 5x112mm wheel bolt patterns.

Brand:
034Motorsport - Corporate Logo
ES#:
3618563
Mfg#:
034-604-7004
In Stock
$80.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Upper Control Arm Kit

ES#4830726 - CTS-SUS-3005 - Sport Upper Control Arm Kit - Combine this with our lower control arm kit for a complete rejuvenation of your front suspension components - CTS - Audi

Combine this with our lower control arm kit for a complete rejuvenation of your front suspension components

Brand:
CTS - Corporate Logo
ES#:
4830726
Mfg#:
CTS-SUS-3005
Ships in 8 Business Days
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ball Seat Stud Conversion Kit

ES#2806943 - 001467ECS01KT4 - Ball Seat Stud Conversion Kit - Make wheel changes faster and easier - ECS - Audi Volkswagen

Make wheel changes faster and easier 10X Entries For Our 25th Anniversary Sweepstakes!
Includes 2 different length studs for up to 10mm spacers for 2 wheels and 20mm spacers for 2 wheels.

Brand:
ECS - Corporate Logo
ES#:
2806943
Mfg#:
001467ECS01KT4
In Stock
ON SALE!
$201.99

This product was last offered at the strikethrough price on
06-13-2026

$191.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

M14 Titanium Wheel Stud Kit - Black - Set Of 20

ES#4487742 - TISTUD20145BLK - M14 Titanium Wheel Stud Kit - Black - Set Of 20 - M14x1.5x75mm with conical nuts - Vargas Turbo Technologies - Audi Volkswagen

M14x1.5x75mm with conical nuts 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4487742
Mfg#:
TISTUD20145BLK
Ships on Aug 31, 2026
$335.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 2 - 2-Piece Rotors (380x34)

ES#3219283 - 003883ECS03KT1 - Front Big Brake Kit - Stage 2 - 2-Piece Rotors (380x34) - A direct fit kit that utilizes your stock calipers with ECS stainless steel lines - ECS - Audi

A direct fit kit that utilizes your stock calipers with ECS stainless steel lines 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3219283
Mfg#:
003883ECS03KT1
Ships on Dec 24, 2026
Auto Notify
ON SALE!
$1725.99

This product was last offered at the strikethrough price on
06-13-2026

$1674.21 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit

ES#2678648 - 003467ECS01AKT2 - Front & Rear Exact-Fit Stainless Steel Brake Lines - Kit - Complete set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Complete set of DOT-compliant lines for an improved pedal feel 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2678648
Mfg#:
003467ECS01AKT2
In Stock
ON SALE!
$217.99

This product was last offered at the strikethrough price on
06-13-2026

$207.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Transmission Mount Insert

ES#4620259 - 8K0399151DB - Transmission Mount Insert - Enhance your driving experience by filling the bushing void. - JH Motorsports - Audi

Enhance your driving experience by filling the bushing void.

Brand:
JH Motorsports - Corporate Logo
ES#:
4620259
Mfg#:
8K0399151DB
In Stock
$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 2 - 2-Piece Rotors (380x34)

ES#3219286 - 003883ECS03KT3 - Front Big Brake Kit - Stage 2 - 2-Piece Rotors (380x34) - A direct fit kit that utilizes your stock calipers and upgrades to large 380mm rotors - ECS - Audi

A direct fit kit that utilizes your stock calipers and upgrades to large 380mm rotors 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3219286
Mfg#:
003883ECS03KT3
Ships on Dec 24, 2026
Auto Notify
ON SALE!
$1590.99

This product was last offered at the strikethrough price on
06-13-2026

$1543.26 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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