3Racing 3RAC-PG4839 48 Pitch 39T Pinion Gear Race Tuned Hard Coated 7075 Aluminium  [3RAC-PG4839]

3RACING 48 Pitch Pinion Gear 39T (7075 w/ Hard Coating) - 3RAC-PG4839
Price:
USD$3.80
Brand:
3Racing
Model:
3RAC-PG4839
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Race Oriented 48 Pitch 39T Pinion from 3Racing

The 3Racing 3RAC-PG4839 is aimed at racers and tuners who need a reliable 48 pitch pinion with low rotating mass. Machined from 7075 aluminium, it keeps inertia down while the hard coating helps maintain tooth integrity under repeated high load cycles.

Tuning and Setup Notes for Performance

This 39 tooth pinion is ideal when adjusting final drive to extract quicker acceleration or to refine top speed in race conditions. Ensure proper mesh and alignment when fitting to get accurate power transfer and to protect the coated tooth surfaces.

What setup checks are critical after fitting this pinion?

Confirm bore seating, set screw engagement and mesh depth. Run slow spool checks to ensure the 3Racing 3RAC-PG4839 engages cleanly before extended high speed runs.

How does the hard coating influence tuning choices?

The coating improves wear resistance so you can test different ratios with less concern for premature tooth wear, but always monitor mesh to avoid abrasive damage from misalignment.

Recommended use cases for this pinion in a racing environment?

Use the 3Racing 3RAC-PG4839 when experimenting with final drive for qualifying runs or when you need a durable, low mass pinion for repeated testing sessions on circuit or club tracks.