GFB 2012 Lightweight Pulley

GFB lightweight pulley kits are made from aircraft-grade 6061-T6 aluminium and offer faster acceleration through significant weight reduction on the crankshaft.

Most of our kits are underdriven, which means the accessories are driven slightly slower to reduce parasitic losses. GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) on the crankshaft as well as parasitic loads from the driven accessories. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.

We know that people are sometimes concerned about possible adverse effects of lightweight pulleys and underdriving, but rest assured we have done our homework! The underdrive ratios have been optimised to ensure there are NO adverse effects on the performance of the accessories, and whilst it is true that some engine types do suffer harmonic issues from lightweight pulleys, we steer clear of those. The kits we release are thoroughly application tested and do NOT cause engine damage in the short or long term.

Go Faster, Add Lightness!

Less Is More. New Lightweight Crank Pulley (Non Underdrive) To Suit VAG 2.0 FSI Engines.
Like all GFB lightweight pulleys, this one begins life as a single 6061 aluminium alloy billet, and is then precision CNC machined to exacting tolerances. We then anodize it black for a stealthy appearance and superior wear resistance.

This results in a large saving of 1.4kg of rotating mass over the factory pulley, without sacrificing strength or reliability.

Like all GFB lightweight pulleys, you can feel the improvements:
Sharper throttle response (particularly off boost)
Engine feels more willing to rev
Stronger “urge”

Golf Mk 5 Non under-drive Crank Pulley also suits:

VW Golf R Mk6 2.0TSI 08-13 Note : When Installing A GFB Valve, It Must Be Installed In The OPPOSITE Orientation To The Factory Plastic Bosch Valve - I.E. Air Must Enter The GFB Valve At The Bottom, And Dump Through The Side.
AUDI 8P (2003-2013) 2.0TFSI
AUDI B7 (2005-2008) 2.0TFSI
VW Golf GTI Mk5 2.0TFSI 04-09
VW Jetta Mk5 2.0 FSI 05-11 Note : When Installing A GFB Valve, It Must Be Installed In The OPPOSITE Orientation To The Factory Plastic Bosch Valve - I.E. Air Must Enter The GFB Valve At The Bottom, And Dump Through The Side.
VW EOS 2.0 TFSI 2006-2015
VW Jetta Mk5 2.0T 2005-2010
AUDI TT 8J 2.0 TFSI (EA113) 06-10
AUDI TT 8J 2.0 TFSI (EA113) 06-10 Note : When Installing A GFB Valve, It Must Be Installed In The OPPOSITE Orientation To The Factory Plastic Bosch Valve - I.E. Air Must Enter The GFB Valve At The Bottom, And Dump Through The Side.
AUDI TTS 8J 2.0 TFSI 06-14
AUDI S3 8P (2006-2013) 2.0TFSI