Description

GFB's lightweight underdrive crank pulley (part number 2005) is made from anodized aircraft-grade billet 6061-T6 aluminium and offers sharper throttle response and faster acceleration. Kit includes: crank pulley only (shorter belts required).

GFB pulleys 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.

Our products are manufactured in Australia and the company is accredited to ISO 9001, which ensures our products meet stringent quality requirements at all stages of manufacture.

 

Specifications

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

Download Installation Instructions

Compatibility

  • Nissan 200SX S14
  • Nissan 200SX S15
  • 1989-1992 Nissan 180SX 1.8
  • 1988-1994 Nissan Silvia S13 1.8 & 2.0

GFB's lightweight underdrive crank pulley (part number 2005) is made from anodized aircraft-grade billet 6061-T6 aluminium and offers sharper throttle response and faster acceleration. Kit includes: crank pulley only (shorter belts required).

GFB pulleys 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.

Our products are manufactured in Australia and the company is accredited to ISO 9001, which ensures our products meet stringent quality requirements at all stages of manufacture.

 

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

  • Nissan 200SX S14
  • Nissan 200SX S15
  • 1989-1992 Nissan 180SX 1.8
  • 1988-1994 Nissan Silvia S13 1.8 & 2.0

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