The pinion is the small gear on the motor shaft that drives the spur gear. Its tooth count sets your gear ratio, which affects speed and acceleration.
Pinions
RC pinion gears to set your gear ratio for speed or acceleration.

Koswork Mod 1 15T Lightweight Hardened Steel Pinion Gear 5mm
SKU: KOS03006-159,90 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Koswork Mod 1 16T Lightweight Aluminium Pinion Gear 5mm
SKU: KOS03009-169,90 €In stock (9)Delivery within Estonia 2-3 working days, other European countries 10 days.
Koswork Mod 1 16T Lightweight Hardened Steel Pinion Gear 5mm
SKU: KOS03006-169,90 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Koswork Mod 1 17T Lightweight Aluminium Pinion Gear 5mm
SKU: KOS03009-179,90 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 17T 5mm (C-72417) Corally
SKU: C-724178,90 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 18T (RP-0118) Ruddog
SKU: RP-01184,90 €In stock (2)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 18T 5mm (C-72418) Corally
SKU: C-724188,90 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 19T (RP-0119) Ruddog
SKU: RP-01194,90 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 19T 5mm (C-72419) Corally
SKU: C-724198,90 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 20T (RP-0120) Ruddog
SKU: RP-01204,90 €In stock (2)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 20T 5mm (C-72420) Corally
SKU: C-724208,90 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Pinion 48dp Steel 21T (RP-0121) Ruddog
SKU: RP-01214,90 €In stock (2)Delivery within Estonia 2-3 working days, other European countries 10 days.
Frequent Questions & Answers
What is a pinion gear?
How do I choose a pinion size?
Go smaller for more acceleration and cooler running, larger for more top speed. Match the pitch to your spur gear and check temperatures.
What pitch pinion do I need?
Match the pinion pitch to your spur gear: 48dp, Mod 0.6 or Mod 1 are common. Mixing pitches will not mesh correctly.












