Under-Drive & Lightweight Pulley Kits - GFB

GFB lightweight pulley kits are made from aircraft-grade 6061-T6 aluminium and offer faster acceleration through significant weight reduction on the crankshaft. The effect is similar to a lighter flywheel, and the car feels more lively and willing to rev.

 

Most of our kits are underdriven, which means the accessories are driven slightly slower to reduce parasitic losses. It should be noted that our underdrive pulley kits do NOT adversely affect the operation of the accessories. If they did, we would not sell them!

Subaru Pulley Kits Available:

GFB WRX 2pc Crank & Alt Underdrive Pulley Kit
GFB WRX 2pc Crank & Alt Underdrive Pulley Kit

GFB 2pc Subaru Pulley Kit to fit ALL WRX Models MY93-MY08 & 98-02 B4 Legacy (Twin Turbo)

Crank & Alternator Pulley's with Replacement Belts

Part # 2001

GFB 2pc Subaru Pulley Kit - # 2001 Crank & Alternator
$349.00
$339.00
Add to Cart
  • 1 kg
  • Available
  • Shipping Time: 1-2 days1
WRX 3pc Crank, Alt & Powersteering Underdrive Pulley Kit
GFB WRX 3pce Underdriven Lightweight Pulley Kit

GFB 3pc Subaru WRX Pulley Kit to fit MY99-MY00 &SF 01-02 Forester

Crank, Alternator & Powersteering Pulley's with Replacement Belts

Part # 2002

GFB 3pc Subaru WRX Pulley Kit # 2002 Crank, Alt & Powersteering
$469.00
$449.00
Add to Cart
  • 1 kg
  • Available
  • Shipping Time: 1-2 days1
WRX 3pc Crank, Alternator & Powersteering Pulley Kit
WRX 3pc Crank, Alternator & Powersteering Pulley Kit

GFB 3pc Subaru WRX Pulley Kit to fit MY93-MY98 & SF 98-00 Forester 

Crank, Alternator & Powersteering Pulley's with Replacement Belts

Part # 2003

GFB 3pc Subaru WRX Pulley Kit # 2003 Crank, Alt & Powersteering
$469.00
$449.00
Add to Cart
  • 1 kg
  • Available
  • Shipping Time: 1-2 days1
GFB WRX & Forester 3pc Underdrive & Lightweight Pulley Kit
GFB WRX & Forester 3pc Underdrive & Lightweight Pulley Kit

GFB 3pc Subaru WRX Pulley Kit to fit MY03-MY07 & SG 05-08 Forester 

Crank, Alternator & Powersteering Pulley's with Replacement Belts

Part # 2010

GFB 3pc Subaru WRX Pulley Kit # 2010 Crank, Alt & Powersteering
$469.00
$449.00
Add to Cart
  • 1 kg
  • Available
  • Shipping Time: 1-2 days1
Subaru MY08 on WRX 3pc Underdrive & Lightweight Pulley Kit - GFB NZ
Subaru MY08 on WRX 3pc Underdrive & Lightweight Pulley Kit - GFB NZ

Subaru WRX Pulley Kit to fit MY08 on + 03-09 GTB Legacy (GFB 3pce) 

Crank, Alternator & Powersteering Pulley's with Replacement Belt

Part # 2014

GFB 3pc Subaru WRX Pulley Kit # 2014 Crank, Alt & Powersteering
$469.00
$449.00
Add to Cart
  • 1 kg
  • Available
  • Shipping Time: 1-2 days1
Subaru BRZ / GT86 / Sicon FR-S 3pc Lightweight Pulley Kit
Subaru BRZ / GT86 / Sicon FR-S 3pc Lightweight Pulley Kit

GFB Subaru BRZ Lightweight Pulley Kit (Sicon FR-S / GT86)  

Crank, Alternator & Powersteering Pulley's - Replacement Belts NOT Needed 

Part # 2016

 

This kit is supplied with 3 pulleys not just for looks - the combined saving of 4.9 lbs (2.2 kgs) is significantly more than what is achieved by replacing just the crank pulley alone.

The weight doesn’t tell the whole story either - even though the saving is a significant 77%, the actual rotating inertia reduction (inertia is what counts) is 83%

GFB 3pc Subaru BRZ/GT86 Pulley Kit # 2016 Crank, Alt & Powersteering
$469.00
$449.00
Add to Cart
  • 1 kg
  • Available
  • Shipping Time: 1-2 days1
Subaru EJ20 & EJ25 Lightweight Crank Pulley - GFB
Subaru EJ20 & EJ25 Lightweight Crank Pulley - GFB

GFB Subaru Lightweight Crank Pulley to fit ALL EJ20 & EJ25 Engines - (Non Underdrive) 

Lightweight Crank Pulley Only

Part # 2009

GFB Subaru Crank Pulley - Lighweight # GFB 2009
$289.00
$279.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1
Lightweight BRZ/Scion Alternator Pulley

Lightweight BRZ/Scion Alternator Pulley also suits:

 

  • TOYOTA 86 (ZN6) GT-GTS 12-on
  • SUBARU BRZ MY12-on
$119.00
$109.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1
Lightweight BRZ/Scion Water Pump Pulley

Lightweight BRZ/Scion Water Pump Pulley also suits:

 

  • TOYOTA 86 (ZN6) GT-GTS 12-on
  • SUBARU BRZ MY12-on
$229.00
$219.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1

Nissan Pulley Kits Available:

SR20DET Lightweight Underdrive Crank Pulley

Suits RWD versions of the SR20DET, as found in the S13-S15 200SX/Silvia and 180SX. Along with the performance improvement, this pulley benefits high-revving engines by underdriving the water pump, which helps prevent cavitation and subsequent overheating when drifting/circuit driving.

Does NOT suit non-turbo SR20 engines or transverse mounted SR20DET.

This pulley does require shorter belts which are not supplied, as the required belts will differ between engines.

Typically S13-14 models use a 4-rib belt on the power steering, whilst S15 models use a 3-rib belt. This pulley will accommodate either, but it is worth checking your engine before sourcing belts.

For 4-rib power steering, you need:

1x 5PK900
2x 4PK860

For 3-rib power steering, you need:

1x 5PK900
1x 4PK860
1x 3PK845-860

 

$249.00
$229.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1
300ZX - Z32 VG30DETT Underdrive Crank Pulley - GFB
300ZX - Z32 VG30DETT Underdrive Crank Pulley - GFB

GFB Z32 300zx Under-drive Crank Pulley - VG30DETT & DE 89-00

Part # 2006

GFB 300ZX Under-drive Crank Pulley # GFB 2006
$359.00
$329.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1

Mitsubishi Pulley Kits Available:

GFB Lightweight EVO 4-9 Under-drive Crank Pulley
GFB Lightweight EVO 4-9 Under-drive Crank Pulley

Mitsubishi EVO 4-9 Under-Drive Crank Pulley (Lightweight)

Part #2011

New from GFB is the Under-drive Crank Pulley for the Mitsubishi EVO VIII & IX. Like all GFB pulleys, the material used is 6000 series aluminium alloy billet, which nets a large weight saving of 1.4 kg over the factory pulley, without sacrificing strength or reliability.


The kit comes complete with the required serpentine belt, and installation is dead easy – no specialized tools are required and it can be done in as little as 30 minutes. The accessories are under-driven by 20%, which does NOT compromise their performance at low RPM, but does help reduce parasitic losses at high RPM.


Like all GFB lightweight under-drive pulleys, the improvement to the car is felt in the form of sharper throttle response (particularly off boost), and the engine feels more willing to rev. A useful comparison is the difference between performance on a cool evening vs. a warm day, or having the A/C off vs. on.


Mitsubishi EVO 4-9 Under-Drive Crank Pulley (Lightweight) # GFB 2011
$339.00
$319.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1

Mazda Pulley Kits Available:

Mazda Rotary 12A & 13B Twin V-Belt Pulley - GFB
Mazda Rotary 12A & 13B Twin V-Belt Pulley - GFB

Mazda 12A / 13B Twin V-Belt Alternator Pulley

Part # 2215

This is a replacement alternator pulley to suit early 12A and 13B rotaries through to series 5 RX-7 (vehicles with 15 mm alternator shaft). It allows a second v-belt to be added for improved reliability, particularly on high-revving engines. Two alternator belts of the same size as the original are required. Note – does not change the drive ratio of the alternator. Benefits•Eliminates belt slip on the alternator/water pump/cooling fan pulleys•Shares the load between two belt•Back-up belt if one belt fails Application List* Mazda 12A Rotary (Early)* Mazda 13B Rotary Available in Red, Blue and Silver.

Mazda 12A/13B Twin V-Belt Alternator Pulley
$119.00
$69.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1

VW & Audi Pulley Kits Available:

Audi A3, TT & MK5/R VW Golf, B6 Passat Crank Pulley
Audi A3, TT & MK5/R VW Golf, B6 Passat Crank Pulley

VW Golf & Audi Crank Pulley

Part # 2012

 

Suits the following cars with the 2.0L turbo FSI engine:

  • Audi A3 (8P)
  • Audi TT and TTS (8J)
  • VW Golf GTi (Mk5) and Golf R
  • VW Jetta (Mk5)
  • VW Passat (B6)
VW Golf & Audi Crank Pulley # GFB 2012
$299.00
$279.00
Add to Cart
  • Available
  • Shipping Time: 1-2 days1

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