So you got your hands on a B6 A4! NEW OWNERS READ THIS!

**justin** · 11-15-2009 02:19 PM

Congratulations! You own an A4! Now what to do to it? The following is what I have compiled over a few different sites mostly from actlsub9 though. I may have missed something so please let me know and I will add it. This will be broken down into performance and appearance modifications.

APPEARANCE MODS

OEM

USP Front Bumper
-Part numbers for the USP Front are
Bumper cover - V8E0 807 103 AS GRU COVER
Lower spoiler - V8E0 807 110 B GRU SPOILER
Fog light grill - V8E0 807 682 C 01C GRILL
Fog light grill - V8E0 807 681 C 01C GRILL
Center Grill - 8E0 807 647 D 01C CENTRAL GRILL

USP Rear Bumper
-USP Rear uses a Euro Rebar
-Part numbers for the USP Front are
USP Rear Upper Bumper Cover: 8E5-807-301-AE-GRU
USP Rear Lower Bumper Cover: 8E5-807-521-G-GRU

USP Avant Roof Spoiler
-Part Number 8E9 827 933 A GRU

USP Door Blades
-Slightly Smaller Than S4 Blades
-Part Numbers:
8E0 853 959C 7DL Front Left
8E0 853 960C 7DL Front Right
8E0 853 969D 7DL Rear Right
8E0 853 970D 7DL Rear Left

S4 Front:
-S4 Front bumpers use NA Rebar
-Part numbers for s4 front are:
8E0-807-103-T-GRU cover
8E0-807-240-B-GRU cover
8E0-807-787-A frame
8E0-807-788-A frame
8E0-898-193-A mount kit
8E0-807-682-B-01C grill
8E0-807-681-B-01C grill
8E0-807-647-B-3SR grill
8E0-941-699-A fog lamp
8E0-941-700-A fog lamp
8E0-955-275-B-GRU cap
8E0-955-276-B-GRU cap

S4 Rear:
-S4 Rear bumpers use NA Rebar
-Part Number for S4 Rear is: 8E5 807 301 S GRU
-A4 Aluminum strip will not work on S4 Rear without modification
-Part Number for S4 Rear Aluminum Strip is: 8E5 807 443 B 2ZZ

S4 DoorBlades:
-S4 Door Blades are slightly larger than USP DoorBlades
-Part numbers for S4 DoorBlades are:
8E0-853-959-A-7DL door flare
8E0-853-960-A-7DL door flare
8E0-853-969-A-7DL door flare
8E0-853-970-A-7DL door flare

S4 Side Skirts
- S4 Sides are the same as stock sides and USP sides

AFTERMARKET

CARACTERE

Caractere Front ~$850
-Made of PURIM
-Is used with Euro Rebar or can be modified to fit on NA Rebar
-Is a full front bumper

Caractere Sides ~$580
-Made of PURIM
-Indentations on underside make jack points useable
-Replaces Stock Sides

Caractere Rear ~$725
-Made of PURIM
-Is only lower half of bumper.
-Stock upper half of rear must be used

OETTINGER

Oettinger Front
-Made of PURIM
-Is a full front bumper

Oettinger Sides
-Made of PURIM
-Jack points are made accessed through jack point covers
-Made to be installed over OEM Sides
-Looks and fits better when installed in place of OEM sides, however requires some work.

Oettinger Rear
-Made of PURIM
-Made to be installed over OEM Stock Rear Lower
-Fitment is bad
-Looks and fits better when installed in place of OEM Rear, however requires molding.

Rieger

Rieger Front ~$510
-Made of ABS Plastic
-Is a full front bumper
-Fitment near fenders is a problem seen HERE

Rieger Sides ~$375
-Made of ABS Plastic
-Replaces Stock Sides

Rieger Rear ~$325
-Made of ABS Plastic
-Is only lower half of bumper.
-Stock upper half of rear must be used
-Can be molded, picture of this can be seen HERE

Kerscher

Kerscher Front ~$450
-Made of Fiberglass
-Is only lower portion of front

Kerscher Sides ~$450
-Made of Fiberglass
-Replaces Stock Sides

Kerscher Rear ~$450
-Made of Fiberglass
-Is only lower half of bumper.
-Stock upper half of rear must be used

Sportec

Sportec Front
-Made of Fiberglass
-Is only lower portion of Front Bumper
-Stock upper must be used

Sportec Sides
-Made of Fiberglass
-Replaces Stock Sides

Sportec Rear
-Made of Fiberglass
-Is only lower half of bumper.
-Stock upper half of rear must be used
-Must use Euro Rebar

ABT

ABT Front
-Made of PURIM
-Is only lower portion of Front Bumper
-Stock upper must be used

ABT Sides
-Made of PURIM
-Replaces Stock Sides

ABT Rear
-Made of PURIM
-Is made to fit on Euro Rear, however modifications can be made to fit on US Rear

Votex

Votex Front ~$640
-Made of PURIM
-Is only lower portion of Front Bumper
-Made to be installed over Stock Lower Front
-Stock Lower Front may be visually seen through mesh of Votex Lower Front

Votex Sides ~$540
-Made of PURIM
-Made to be installed over OEM Sides

Votex Rear ~$375
-Made of PURIM
-Is only lower portion of rear
-Made to be installed over Stock Lower Rear

EXHAUST TIPS

-Vibrant is the most commonly used aftermarket tip
-Must be welded on
-Model 1303 is 3.5 tip and 1304 is 4 tip, both models are slant style tip

Picture of 3.5 Tip can be seen HERE
Picture of 4.0 Tip can be seen HERE and HERE and HERE
Picture of Dual Tip on Rieger Rear can be seen HERE
Picture of Dual Tip on Kerscher Rear can be seen HERE
Picture of Dual Tip on ABT Rear can be seen HERE
Picture of Dual Tip on Molded Oettinger Rear can be seen HERE
Picture of Dual Tip on S4 Rear can be seen HERE

GRILLS

-Grills are simple snap on snap off installation
-Take care removing stock grill as the tabs can easily be broken
-Each grill can take on a different look by painting black, body color or chrome

Picture of Caractere Grill can be seen HERE
Picture of Oettinger Grill can be seen HERE
Picture of ABT Grill can be seen HERE
Picture of Kamei Grill can be seen HERE
Picture of Kamei Grill with OEM Audi Rings can be seen HERE
Picture of FK Grill can be seen HERE
Picture of Wetworks Garage Grill can be seen HERE
Picture of Blackout S4 Grill can be seen HERE
Picture of S4 Grill can be seen HERE
Picture of Blackout A4 Grill can be seen HERE

LED TAILS

-LEDs replace brake lights
-Reverse Light and Turn Signal Lights are bulbs
-Reverse and Turn Signal can be replaced with LEDs as well
-Many tails suffer from fitment problems
-Some tails plastic can be deformed from high temperatures caused from the sun
-Come in black trim and Red trim
-Some tails do not come with resistors and cause a bulb out warning
-Load equalizers (resistors) and LED turn and reverse lights can be bought HERE
-Fitment out of the box may look like THIS

Picture of LED Tails on Moro Blue car can be seen HERE
Picture of LED Tails on Blue car can be seen HERE
Picture of LED Tails on Red car can be seen HERE
Picture of LED Tails on Black car With tinted top portion can be seen HERE
Picture of LED Tails on Grey car can be seen HERE
Picture of LED Tails on Grey car with tinted top portion can be seen HERE

WIDEBODY

-Widebodies give the B6 A4 a whole new look
-Can range from OEM looking fender flares to full out GTR Style
-Prices climb rapidly with base kit, custom bodywork, full repaint, and a new set of wheels

Picture of Kerscher Widebody can be seen HERE and HERE
Picture of Rieger Widebody can be seen HERE and HERE
Picture of GTR Style Rieger Widebody can be seen HERE and HERE
Picture of USP Widebody can be seen HERE and HERE and HERE
Picture of ABT Widebody can be seen HERE and HERE

ROOF SPOILERS

-Can be held on with double sided tape, however apoxy works best

Picture of Caractere Roof Spoiler can be seen HERE ~$310
Picture of Oettinger Roof Spoiler can be seen HERE
Picture of Rieger Roof Spoiler can be seen HERE ~$100
Picture of Eurocode Roof Spoiler can be seen HERE ~$180
Picture of a Modified Eurocode Roof Spoiler can be seen HERE
Picture of Decorsa Roof Spoiler can be seen HERE
Picture of JE Design Roof Spoiler can be seen HERE

TRUNK SPOILERS

-Oem spoilers are held on using 3 bolts and adhesive
-Most aftermarket ones are held on by adhesive alone
-Can use double sided tape, however apoxy will make it flush to the trunk

Picture of Caractere Trunk Spoiler can be seen HERE ~$420
Picture of Oettinger Trunk Spoiler can be seen HERE
Picture of Rieger Trunk Spoiler can be seen HERE ~$370
Picture of JE Design Trunk Spoiler can be seen HERE
Picture of WetWorks Garage Trunk Spoiler can be seen HERE and HERE

SPLITTERS

-The Kerscher Splitter(~$250) can be used most any of the Aftermarket Front Bumpers
-Installation is as easy as a couple of bolts
-Will require holes to be drilled into you front bumper

Picture of Kerscher Splitter on Kerscher Front can be seen HERE
Picture of Kerscher Splitter on Caractere Front can be seen HERE
Picture of Kerscher Splitter on USP Front can be seen HERE
Picture of Kerscher Splitter on Votex Front can be seen HERE
Picture of Custom Splitter on Oettinger Front can be seen HERE

**justin** · 11-15-2009 02:22 PM

SUSPENSION

Sway Bars

OEM

Stock Rear Sway: 16mm
- Part Number: 8E0-411-309-B

Sport Package Sway: 18mm
-Non Adjustable
-Solid Bar Construction
-Part Number 8E0-411-309-D

S4 Rear Sway Bar: 20mm
-Non Adjustable
-Solid Bar Construction
-Rear Sway: 8EO-511-409-AJ
-Rear Sway Bushings: 8EO-511-327-A

RS4 Rear Sway Bar: 22mm
-Non Adjustable
-Solid Bar Construction
-Rear Sway: 8E0511409AM
-Rear Sway Bushes: 8E0511327B (X2)
-Bolts for Brackets: N10127706 (X4)
-Bolts for ARB links: N10528101 (X2)

H-Sport

-Hollow Bar Construction
-Front and Rear Sway Bars sold together as a set
-H-Sport A4 Set has 35mm Front and 22mm Rear
-H-Sport S4 Set has 35mm Front and 24 mm Rear
-Rear Sways in both packages are adjustable with 2 settings

Nuespeed~$190

-Only sells Rear Sway Bar
-Bar is adjustable
-Rear Sway is 21mm
-Requires welding to be installed

H&R

-Front and Rear sold separately
-Rear Sway is adjustable
-H&R Front Sway is 32mm ~$190
-H&R Rear Sway is 20mm~$160

Springs
-Lowered amounts are from stock non-sport
-Sport package is approx. 3/4 inch lower than non-sport

-H&R Sport: Lowers F/1.7” R/1.6” ~$220
-Nuespeed Sport: Lowers F/1.5” R/1.5” ~$200
-Nuespeed Race: Lowers F/2.0” R/2.0” ~$200
-Vogtland Sport: Lowers F/1.4” R/1.4” ~$200
-Eibach Pro-Kit: Lowers F/1.2” R/1.2” ~$230
-Tein HTech: Lowers F/1.7” R/1.8” ~$170
-Tein STech: Lowers F/2.2” R/2.4” ~$170

Shocks

Bilstein HD Front: Not For Lowered Car. Adjustable Spring Perch. ~$240
Bilstein HD Rear: Not For Lowered Car ~$240
Bilstein Sport Front: For Lowered Car. Adjustable Spring Perch. ~$240
Bilstein Sport Rear: For Lowered Car. ~$240
Koni Sport Front: For Lowered Car. Adjustable Dampening ~$260
Koni Sport Rear: For Lowered Car. Adjustable Dampening ~$200

Coilovers

Stasis Engineering

Stasis Street Sport~$800
-Sourced from straight from Koni
-Progressive Springs
-Stasis adjusts height and dampening to “optimal” settings
-Rebound adjustable off of car
-Rear inserts are required to maintain stock height in rear

Stasis Track Sport~$2000
-Linear rate springs
-Can be ordered with different rate springs
-Rebound adjustable while on car
-Koni dampers
-Koni springs

Stasis Motor Sport~$3800
-Linear rate springs
-Can be ordered with different rate springs
-Ohlins adjustable dampers
-Ohlins external front adjustable dampers

H&R

H&R~$1150
-Progressive Springs
-Threaded adjustable lowering
-Non-adjustable dampening

Tein

Tein Basics~$700
-Progressive Springs
-Non adjustable dampening

Tein Super Street~$950
-Linear Rate Springs
-16 different dampening adjustments

Koni

Koni~$950
-Progressive Springs
-Threaded adjustable lowering
-Rebound adjustable off of car
-Rear inserts are required to maintain stock height in rear

Bilstein

Bilstein PSS9 ~$1400
-Linear Spring Rates
-Threaded adjustable lowering
-9 Levels of dampening adjustment
-On car single ratio rebound/ compression adjustment knob

KW

KW Varient 1~$1200
-Progressive Springs
-Threaded adjustable lowering
-Non-adjustable dampening

KW Varient 2~$1500
-Linear Rate Springs
-Threaded adjustable lowerings
-Infinite adjustable dampening

KW Varient 3~$1750
-Linear Rate Springs
-Threaded adjustable lowering
-Infinite adjustable rebound dampening
-14 levels of compression adjustments

Vogtland

Vogtland~$1000
-Progressive Front Springs
-Linear Rate Rear Springs
-Threaded adjustable lowering
-Dampers are sourced from KW

Intake

ABD ~$300
-Pic

Carbonio ~$370
-Pic

Boosted Tech ~$220
-Pic (1.8t)
-Pic (3.0)

EvoMS ~$280
-Pic

EXHAUST

Neuspeed
-Sound Clip can be heard HERE
Note: 1.8T Engine, Test Pipe

-Sound Clip can be heard HERE and HERE and HERE
Note: 1.8T Engine

Thermal
Street
-Sound Clip can be heard HERE
Note: 1.8T Engine Test Pipe

Race
-Sound Clip can be heard HERE
Note: 1.8T Engine, With Down Pipe

APR
-Sound Clip can be heard HERE
Note: 1.8T Engine

AWE
-Sound Clip can be heard HERE
-Same as Thermal, however has dual adjustable tips
Note: 1.8T Engine

Magnaflow
-Sound Clip can be heard
Note: 1.8T Engine, Boosted Tech CAI

-Sound Clip can be heard HERE
Note: 3.0 Engine, 14815 Mufflers

Decorsa
-Sound Clip can be heard HERE
Note: 3.0 Engine

Borla
-Sound Clip can be heard
Note: 1.8T Engine

Elite
-Sound Clip can be heard HERE
Note: 3.0 Engine

-Sound Clip can be heard
Note: 3.0 Engine

Intercoolers

Neuspeed DSMIC ~$850
-Adds another intercooler on opposite side of stock
-No cutting/modifying needed. Direct bolt-on

Evolution Racewerks Competition FMIC ~$1550
-Recommended for BT setups
-Intercooler size: 20"11"x3" (24"x11"x3" with endtanks)
-Polished intercooler, end tanks and all piping
-Rolled intercooler end tank design featuring ported and polished interior for better flow
-All aluminum intercooler piping. Replaces every piece with hard piping
-Retains the stock side grilles/fog light covers for the OEM look
-Includes replacement bumper reinforcement bar
-External power steering cooler kit with all hardware inclded. Replaces OEM power
steering cooler, no need to tweak or rig the OEM piece

Evolution Racewerks Sport FMIC ~$1000
-Recommended for KO3/KO4 setups
-Intercooler size: 18"6.5"x3" (24"x6.5"x3" with end tanks)
-Polished intercooler, end tanks and all piping
-Rolled intercooler end tank design featuring ported and polished interior for better flow
-All aluminum intercooler piping. Replaces every piece with hard piping
-Retains the stock side grilles/fog light covers for the OEM look
-OEM reinforcement bar is retained with no modifications
-External power steering cooler kit with all hardware inclded. Replaces OEM power
steering cooler, no need to tweak or rig the OEM piece

Eurocode FMIC ~$950
-Gain (recovery) of 8HP was achieved at stock boost levels
-0 pressure drop between stock IC and our FMIC.
-HP and torque also came on sooner so no additional delays or lag.

AWE FMIC ~$1000
-All aluminum construction, including tubing, for maximum heat transfer
-Thick cast end tanks for maximum heat transfer
-Dyno tested end tank geometry for optimum flow
-No cutting or modification of front bumper support
-4 ply silicone couplers with stainless steel rolled edge clamps

Racetec FMIC ~
-Bar/Plate intercooler with polished cast aluminum end tanks.
-Powder coated mounting bracket.
-Scotch Brite mandrel bent aluminum tubes
-Bar/Plate intercooler with 16 Charge rows for ultimate cooling efficiency,thermal reserves and flow rate.
-Cast Aluminum end tanks for smooth airflow and even air distribution.
-Designed to fit the OEM and Supersport front bumper without any cutting.
-Intercooler can be inverted to accommodate a larger front facia such as ABT, Kerscher, etc.
-A drop down bracket is included if specified at initial purchase.

APR FMIC ~$950
-APR Cast End Tanks with Internal Vaning
-Top-Bottom Feed Bar and Plate Aluminum Core
-Mandrel-Bent, Powdercoated Stainless Steel Plumbing
-APR Custom Silicone Intake Hoses
-All Associated Bracketry and Hardware

OEM Brake Upgrades

B6A4 1.8t- Same Caliper as B6A4 3.0
Front Rotor: 288x25
Rear Rotor: 245x10 or 255x12

To check size of rear rotor, remove and check part #:
8E0 615 601 P = 245x10mm
8E0 615 601 D = 255x12mm

B6A4 3.0- Same Caliper as B6A4 1.8t
Front Rotor: 312x25
Rear Rotor: 255x12

B5S4
Front Rotor: 321x30
Rear Rotor: 256x22

B6S4- Same Caliper as B7A4 & B7S4
Front Rotor: 345x30
Rear Rotor: 300x22

B7A4- Same Caliper as B6S4 & B7S4
Front Rotor: 320x30
Rear Rotor: 288x12

B7S4- Same Caliper as B6S4 & B7A4
Front Rotor: 345x30
Rear Rotor: 300x20

Front BBK

Stasis/Alcon Mono
-4 Piston Calipers with 328mm x 32mm rotors
-4 Piston Calipers with 355mm x 32mm rotors
-6 Piston Calipers with 380mm x 32mm rotors

Porsche BBK
-Porsche 993TT Calipers with 322mm rotors
-Porsche Boxster Calipers with 332mm x 26mm rotors
-Porsche Cayenne Calipers with 352mm x 32mm rotors

Stoptech BBK
-4 Piston Caliper with 332mm x 32mm rotors
-4 Piston Caliper with 355mm x 32mm rotors

Brembo Gran Turismo
-4 Piston Calipers with 320mm x 32mm rotors
-4 Piston Calipers with 328mm x 28mm rotors
-4 Piston Calipers with 355mm x 32mm rotors

Rear BBK

Brembo 345mm x 28mm Rear BBK (Without E-Brake)
Stasis/Alcon 305mm x 10mm Rear (Uses Stock Caliper, Maintains E-Brake)

This is just about everything I can think of. Again special thanks out to actlsub9 of audizine for doing a lot of this already

and A4mods.com for their awesome write ups and DIYs.