Automotive parts for e-bikes, designed to deliver a wide, heavy-duty rim for downhill and load-bearing roles. Confidence for riders who transport passengers or deliveries comes from a rim built to resist stress and stay true. Is the hammer-ebikes MTX39 Ebike Rim the right upgrade for your e-bike and riding demands?
⚡ At a Glance
- • Rim Profile: 39mm wide, deep V profile for maximum strength, built for 36-spoke builds
- • Best for: Downhill, tandem, towing and delivery e-bike applications that need robust wheels
- • Not ideal for: Riders seeking the lightest race-specific rims and minimal-weight setups
27.5-inch rim with a 39mm bed and deep V profile, compatible with 36 spokes and 12G spoke gauge. Suited to e-bikes that require strong, load-capable wheels for rugged or cargo use.
Greater lateral strength – with deep V profile
Deep V profile increases cross-sectional stiffness across the rim bed and sidewalls, reducing lateral flex under heavy loads. Compatibility with a 36-spoke build helps distribute forces evenly around the wheel.
Improved resistance to bending and wobble when hauling passengers or cargo, keeping wheels truer for longer and reducing the need for frequent truing.
Reliable spoke system – thanks to 36-spoke, 12G compatibility
Designed for 36 spokes and suitable for 12G spokes, matching common heavy-duty wheel builds used on e-bikes. Higher spoke counts spread load and reduce stress per spoke.
Enhanced wheel durability under repeated impacts and load cycles, making replacements or repairs less frequent on high-mileage e-bikes.
Versatile 27.5-inch sizing – with a wide 39mm bed
27.5-inch diameter keeps a balance between manoeuvrability and rollover ability, while the 39mm rim bed supports wider tyres. Wider tyre profiles aid contact patch stability when carrying weight.
Better stability and predictable handling for carrying cargo or passengers, while remaining compatible with many common e-bike tyre choices.
✨ The 4 Key Reasons for hammer-ebikes MTX39 Ebike Rim
- 36-Spoke Design - Distributes load evenly for heavy riders and cargo over rough terrain
- 39mm Rim Bed - Provides wider tyre support, improving stability with larger e-bike loads
- 12G Spoke Compatibility - Accepts thicker gauge spokes for long-term strength and reduced spoke fatigue
- Proven Replacement Fit - User reports indicate reliable performance and straightforward swap into e-bike wheels
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: hammer-ebikes
- Model: MTX39
- Rim Diameter: 27.5-inch
- Rim Width: 39mm
❓ Frequently Asked Questions
Q: Is the rim compatible with standard e-bikes?
A: User reviews confirm compatibility with e-bikes and describe the rim as a suitable replacement for common e-bike wheel builds.
Q: What spoke count and gauge does the rim support?
A: The rim is built for 36 spokes and is suitable for 12G spokes, matching typical heavy-duty wheel assemblies.
Q: Can the rim cope with cargo and tandem use?
A: Product descriptions specify suitability for downhill, tandem, towing and deliveries, indicating design intent for load-bearing applications.
🏆 Our Verdict
The hammer-ebikes MTX39 Ebike Rim suits riders who need a robust wheel for hauling cargo, tandem riding or aggressive downhill use. A deep V profile combined with 36-spoke, 12G compatibility gives a clear strength advantage for heavy-duty e-bike roles. Long-term value comes from durability and fewer maintenance interventions, making it a sensible upgrade for work or utility e-bikes.
