Forge Performance Products - VW MK4 GLI & 337/20th
Since 1996, Forge Motorsport has provided innovation, clever design, and highest quality manufacturing from their in-house CNC machine shop.
Not only has Forge Motorsport made a name for themselves in supplying OE manufacturers with valves, intercoolers, and actuators, but they have excelled in the world of Motorsport with a heavy presence in F1, WRC, Rally X, and Le Mans. Look no further than Forge for all your performance needs!
Forge Ahead
Fits:
VW MK4 Jetta GLI 1.8T (2004 - 2005)
VW 337/20th (2002 - 2003)
Forge - Kona Cold Air Intake Kit - Carbon Fiber - (NO LONGER AVAILABLE)
For Euro Models Only MK5/6 Golf with 1.4T
Brand:
ES#:
1832483
Mfg#:
FMIND01
No longer available
Front Mount Intercooler - Black Hoses - (NO LONGER AVAILABLE)
15*C / 27*F temperature drop with no loss of boost pressure
Brand:
ES#:
1832081
Mfg#:
FMINTMK4F
No longer available
Front Mount Intercooler - Red Hoses - (NO LONGER AVAILABLE)
15*C / 27*F temperature drop with no loss of boost pressure
Brand:
ES#:
1832084
Mfg#:
FMINTMK4FR
No longer available
Side Mount Intercooler - Polished
Fits in stock location, excellent upgrade over stock
Brand:
ES#:
1832080
Mfg#:
FMINTMK4S
008 Premium Diverter Valve - Anodized Black
Smaller, tougher and tuneable
Brand:
ES#:
2224448
Mfg#:
FMDV008
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
Back Ordered
Auto Notify
Back Ordered
Blow Off Valve - Atmospheric
34mm weld on dual piston atmospheric blow off valve for custom installs
Brand:
ES#:
1832445
Mfg#:
FMDVWO34C
Blow Off Valve - Polished
Made to mount on top of hard boost pipe. Side vacuum port.
Brand:
ES#:
2765467
Mfg#:
FMDV004A
Blow Off Valve - Polished
Made to mount on top of hard boost pipe. Vacuum port on top.
Brand:
ES#:
1832067
Mfg#:
FMDV004C
Forge Supersize Recirculating Valve
Designed to offer extreme flow rates for highly modified turbocharger setups
Brand:
ES#:
1832441
Mfg#:
FMDVSUPRC
Splitter Valve - Black
Recirculation & blow off valve all in one for customers that want both styles
Brand:
ES#:
8288
Mfg#:
FMDVSPLTR
Splitter Valve - Polished
Recirculation & blow off valve all in one for customers that want both styles
Brand:
ES#:
1832064
Mfg#:
FMDVSPLTRC
Atmospheric Blow Off Valve Fitting Kit - Black - (NO LONGER AVAILABLE)
Installation hardware for blow off valve, includes black hoses.
Brand:
ES#:
1832458
Mfg#:
FMFK004
No longer available
Atmospheric Blow Off Valve Fitting Kit - Blue Hoses - (NO LONGER AVAILABLE)
Installation hardware for blow off valve, includes blue hoses
Brand:
ES#:
2695471
Mfg#:
FMFK004-BLU
No longer available
Diverter Valve Relocation Kit - Black Hoses - (NO LONGER AVAILABLE)
Relocate the diverter valve from the hot side of the turbo to the cold side.
Brand:
ES#:
261319
Mfg#:
FMDVRLK
No longer available
Diverter Valve Relocation Kit - Blue Hoses - (NO LONGER AVAILABLE)
Relocate the diverter valve from the hot side of the turbo to the cold side
Brand:
ES#:
1832430
Mfg#:
FMDVRLKB
No longer available
Diverter Valve Relocation Kit - Red Hoses - (NO LONGER AVAILABLE)
Relocate the diverter valve from the hot side of the turbo to the cold side
Brand:
ES#:
1832431
Mfg#:
FMDVRLKR
No longer available
DV Tuning Kit
Fine tune your Blow Off/Diverter Valve to the exact needs of your engine with this complete tuning kit.
Brand:
ES#:
1832055
Mfg#:
FMDVTUN
K04 1.8T Turbo Wastegate Actuator
Increase boost in your engine with this new actuator
Brand:
ES#:
1832380
Mfg#:
FMACVAG01
Wastegate Actuator Spring Tuning Kit
Fine tune your wastegate to the exact needs of your engine
Brand:
ES#:
1832543
Mfg#:
FMPACTUN
Manual Boost Controller - Black - Mini
In-car boost controller for fine tuning
Brand:
ES#:
1832074
Mfg#:
FMICB051
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
Ships on Aug 31, 2026
Auto Notify
Ships on Aug 31, 2026
Manual Boost Controller - Polished
Lockable under-hood boost controller
Brand:
ES#:
1832070
Mfg#:
FMBV050C
Choose how many gift cards you would like below. You can set the denomination in your cart during checkout.
Availability:
Back Ordered
Auto Notify
Back Ordered
Manual Boost Controller - Polished
In-car boost controller for fine tuning
Brand:
ES#:
1832076
Mfg#:
FMICB051C
Manual Boost Controller-Polished
In-Car boost controller. Valve only, does not come with hoses or any accessories
Brand:
ES#:
7932
Mfg#:
FMICB051 POLISH
Throttle Body Hose - Black - (NO LONGER AVAILABLE)
From the stock intercooler to the throttle body
Brand:
ES#:
1832531
Mfg#:
FMKTICTB
No longer available
Throttle Body Hose - Blue - (NO LONGER AVAILABLE)
From the stock intercooler to the throttle body
Brand:
ES#:
1832532
Mfg#:
FMKTICTBB
No longer available
Throttle Body Hose - Red - (NO LONGER AVAILABLE)
From the stock intercooler to the throttle body
Brand:
ES#:
1832533
Mfg#:
FMKTICTBR
No longer available
19-25mm PCV Valve Adapter - Black
The perfect component for those upgrading their PCVs
Brand:
ES#:
2597318
Mfg#:
S25-19BLK
19-25mm PCV Valve Adapter - Blue
The perfect component for those upgrading their PCVs
Brand:
ES#:
2497366
Mfg#:
S25-19BLUE