Ace Redrives USA · US & Canada

Affordable aircraft redrives. Stocked in the USA.

Belt reduction drives for ultralight and experimental aircraft engine conversions. Choose your engine, compare your options, and get fitment help from our US team.

Most in-stock orders ship within 48 hours.

Ace redrive installed on a V-Twin engine

Start with your engine

What engine are you using?

Explore the redrive family for your engine. Confirm engine output, crankshaft dimensions, and installation details before ordering.

US fitment support

Not sure where to start?

Tell us your engine model, horsepower, crankshaft size, and aircraft. We’ll help you narrow down the right setup.

Find my redrive 605-299-1175

Engine family alone does not confirm fitment. View the compatibility guide

Your V-Twin. Two drive options.

Poly-V or cogged belt?

Start with the Poly-V for value, or choose the cogged-belt version as the premium lower-tension upgrade. Both V-Twin versions use a standard 1.8:1 reduction ratio.

The value option

Poly-V belt

A multi-ribbed friction-drive belt in a compact, fully assembled redrive. Choose the rating that covers your engine’s output.

  • US lineup: up to 28, 36, or 50 HP.
  • Friction drive needs the specified belt tension to transmit torque.
Shop Poly-V · From $899.99

The premium upgrade

Cogged / toothed belt

Positive tooth engagement transmits torque with less required belt tension than the comparable friction-drive setup.

  • Lower tension reduces radial bearing load and can help reduce bearing wear.
  • V-Twin model rated up to 50 HP.
Shop the upgrade · $1,499.99

Use the installation and belt-tension specifications for your exact model. A lower-tension design still requires correct setup and inspection.

  • SKF bearings

    Quality bearings and machined components in a compact redrive assembly.

  • Eccentric shaft adjustment

    A straightforward belt-adjustment system. Set tension to the specifications for your model.

  • US inventory & support

    Redrives and service parts stocked in the USA. Call 605-299-1175 for engine fitment and installation questions.

Affordable Flying Is Our Mission

Ace Redrives USA brings belt reduction drives and fitment support to builders across the United States and Canada. Our mission is straightforward: make light aircraft ownership and building more accessible.

Operated by Av8r Capital Group Corp, we work alongside Mini-Max USA, Carlson Aircraft, ThrustCraft Performance, and SD Planes USA in an aviation community built around affordable flying.

Meet Ace Redrives USA

Let’s work through your installation.

Send us your engine model, estimated horsepower, crankshaft diameter, aircraft, and tractor or pusher configuration. We’ll help confirm the redrive and any installation accessories.

605-299-1175 · info@aceredrives.com