Ace Redrive – V-Twin 627–993cc V-Groove Poly Belt PSRU
The most affordable, field-proven PSRU for V-Twin commercial engines — now stocked in the USA for fast delivery.
Ace Aviation has sold over 685 redrives worldwide, and it's easy to see why. Builders consistently call these units "pieces of art" — precision-machined, lightweight, and engineered to handle the demands of ultralight and light sport experimental aircraft. As the exclusive US & Canada distributor, Ace Redrives USA ships from domestic stock — no more waiting 6–12 weeks from overseas.
🔧 Engine Compatibility
Fits V-Twin engines from 627cc to 993cc, including:
- Briggs & Stratton (all popular models)
- Predator 670cc
- Honda V-Twin
- Subaru V-Twin
- Kohler Command V-Twin
- Kawasaki V-Twin
- Lifan V-Twin
- Yamaha V-Twin
- And many others with a standard parallel crankshaft (1" to 1-7/16")
⚙️ Technical Specifications
| Drive Type |
V-Groove Poly Belt |
| Standard Ratio |
1.8:1 |
| Redrive Weight |
3.9 kg (8.6 lbs) |
| Bearings |
Premium SKF (industrial grade) |
| Belt Tension |
Max 29 Nm |
| Crankshaft Requirement |
Standard parallel, 1" to 1-7/16" |
| Ships As |
Fully assembled |
✅ Why Builders Choose Ace
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Eccentric Shaft Tensioner — Ace Aviation's patented design lets you set belt tension perfectly in under 5 minutes with a single Allen key. No guesswork, no special tools.
-
SKF Bearings — The same industrial-grade bearings used in heavy machinery. Built to last hundreds of flight hours.
-
Fraction of the Cost — Significantly less expensive than a Rotax gearbox, with comparable build quality.
-
US-Stocked — Ships from the USA. No import delays, no surprise tariff invoices after purchase.
-
Fully Assembled — Arrives ready to install. No machining or assembly required.
📦 What's Included
- Complete Ace Aviation V-Groove Belt Redrive unit (fully assembled)
- All nuts and bolts for joining redrive components
⚠️ Note: Keyless bush for small pulley-to-crankshaft connection is not included (customer-supplied). Mounting bolts from backplate to engine crankcase are not included (customer-supplied).
📐 Select Your HP Variant
Choose the variant that matches your engine's output:
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Up to 28HP — $899.99
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Up to 35HP — $999.99
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Up to 44HP — $1,049.99
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Up to 50HP — $1,099.99
Questions about fitment? Contact Ace Redrives USA — we're here to help you get the right unit for your build.
