3Racing 3RAC-PG4845 48 Pitch 45T Pinion Gear Racing Setup Spec 7075  [3RAC-PG4845]

3RACING 48 Pitch Pinion Gear 45T (7075 w/ Hard Coating) - 3RAC-PG4845
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-PG4845
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Racing-Oriented 7075 Pinion by 3Racing

The 3Racing 48 Pitch Pinion Gear 45T, model 3RAC-PG4845, is produced from 7075 aluminium and finished with a hard coating to improve wear resistance under competitive loads. The 45-tooth count provides predictable ratio steps for tuners who need consistent lap-to-lap behaviour.

Technical Highlights

  • Material: High strength 7075 aluminium chosen for its fatigue resistance under racing cycles.
  • Coating: Hard-coated surface to reduce micro abrasive wear and maintain tooth profile.
  • Tooth Count: 45T enables fine incremental changes to gear ratio for setup optimisation.
  • Compatibility: Specified for systems that require 48 pitch pinions and matching spurs.
  • Application: Intended as an upgrade option for serious racers refining gear steps for track performance.

What performance benefit does 45T provide versus 43T or 47T?

A 45T pinion gives smaller ratio changes between nearby sizes, allowing more precise tuning of acceleration versus top speed compared with larger tooth jumps.

Are there run-in or bedding procedures recommended?

After installation, verify mesh and run controlled low power laps to confirm alignment and observe for abnormal wear before full race power is applied.

Which symptoms indicate the pinion needs replacement?

Look for tooth profile deformation, metal burrs, or loss of mesh stability. Any frequent skipping or grinding under normal mesh means replacement is due.