Poly-V · 28 / 36 / 50 HP
V-Twin engines
627–993cc commercial V-Twin conversions. Match the rating to your engine’s actual output.
From $899.99
Explore this redrive Explore the cogged-belt upgradeAce Redrives USA · US & Canada
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
Explore the redrive family for your engine. Confirm engine output, crankshaft dimensions, and installation details before ordering.
Poly-V · 28 / 36 / 50 HP
627–993cc commercial V-Twin conversions. Match the rating to your engine’s actual output.
From $899.99
Explore this redrive Explore the cogged-belt upgrade
Cogged belt · Up to 85 HP
Phazer 500 four-stroke. 499cc liquid-cooled parallel twin.
$1,599.99
Explore this redrive
Poly-V · Up to 50 HP
Silver Wing 600 / FJS600. 582cc liquid-cooled DOHC parallel twin.
$1,299.99
Explore this redrive
Cogged belt · Up to 85 HP
ATV-derived V-Twin conversions. Confirm your engine and crankshaft configuration.
$1,599.99
Explore this redrive
Poly-V belt
200–460cc single-cylinder conversions. Confirm output and shaft dimensions.
$829.99
Explore this redriveUS fitment support
Tell us your engine model, horsepower, crankshaft size, and aircraft. We’ll help you narrow down the right setup.
Find my redrive 605-299-1175Engine family alone does not confirm fitment. View the compatibility guide
Your V-Twin. Two drive options.
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
A multi-ribbed friction-drive belt in a compact, fully assembled redrive. Choose the rating that covers your engine’s output.
The premium upgrade
Positive tooth engagement transmits torque with less required belt tension than the comparable friction-drive setup.
Use the installation and belt-tension specifications for your exact model. A lower-tension design still requires correct setup and inspection.