Vona SA19M 28/29 Double Layer Wheel Rim, Compatible with Disc Brakes, 28 Holes

Vona SA19M 28/29" Rim | Double Layer Disc | 622x19mm

A versatile rim where durability and performance meet.

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✨ Product Overview:
The Vona SA19M is a double-walled aluminum rim designed for modern bicycles with disc brakes, meeting the standards of 28-inch (700C) and 29-inch mountain bikes. With a diameter of 622mm and an inner width of 19mm, this rim offers robustness, lightness, and reliable performance for both city and mountain bike users. Its high-strength construction ensures durability under heavy-duty use.

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🔬 TECHNICAL DETAILS & ENGINEERING SPECIFICATIONS:

**1. 🛡️ DOUBLE WALL CONSTRUCTION & HEIGHT

• Structure: Double Layer Double wall construction.

• Height: 25mm .

• Advantage: The double-layer construction means the wheel rim consists of two layers of aluminum profile. This design:

  • Superior Rigidity and Durability: It provides significantly higher torsional and radial resistance compared to single-ply rims. Under heavy loads, harsh impacts, and bumpy roads, it minimizes the risk of bending, stretching, and ovalization (shattering).

  • More Illustrious Performance: The rigid structure allows for more efficient transmission of pedal power and sharper turns.

  • 25mm Rim Depth: This height provides extra rigidity to the rim while slightly increasing aerodynamic efficiency. It strikes an optimal balance between weight and strength.

**2. 📏 OPTIMUM WIDTH: 19mm INNER / 23mm OUTER

• Interior Width: 19mm .

• External Width: 23mm .

• Advantage: The 19mm inner width provides an ideal base for today's popular tire widths:

  • Flexible Tire Compatibility: It can safely accommodate both narrower MTB tires such as 1.75"-2.10" (45-55mm) and wider tires such as 2.10"-2.30" (55-60mm).

  • Optimized Tire Profile: It ensures the tire sits and "balloons" correctly on the rim. This contributes to greater tire sidewall stability, improved grip, and lower rolling resistance.

  • Tubeless Preparation (Potential): This width could be a suitable starting point for a future tubeless tire conversion (the manufacturer should be consulted for specific support).

**3. 🛑 DISC BRAKE COMPATIBLE DESIGN

• Brake Type: Disc Brake (Special Disc Brake Housing) .

• Advantage: On the rim There is no braking surface . All braking power is delivered via a separate disc (rotor) and caliper. This allows for:

  • Consistent Performance in Wet and Muddy Conditions: Braking power is unaffected by rain, mud, or dust.

  • Rim Lifespan: Mechanical wear (abrasion) occurs only on the disc, which can be easily replaced; the rim itself does not wear out.

  • More Powerful Braking: Disc brakes provide more reliable and powerful braking, especially on long descents and under heavy loads.

4. ⚙️ 36-hole (36H) configuration

• Body (Number of Holes): 36H (36 Spoke/36 Wire) .

• Advantage: 36 strings is the standard, focused on durability. Specifically:

  • Mountain Biking and Touring Use: It provides maximum resistance to heavy loads, hard landings, and impacts from rough terrain.

  • Weight/Weight Capacity Balance: Although slightly heavier than the lighter 32H rims, the added durability it provides is far more important, especially for strong and heavy riders or bikes that carry heavy loads.

  • Reliability: Because each string carries less load, the overall structure is more stable and has a longer lifespan.

**5. 🚴 VERSATILE USE

• Bicycle Type: City, Mountain.

• Valve Compatibility: Auto Valve (Schrader/Auto Valve) .

• Advantage:

  • With its spacious interior and 36H structure. XC (Cross Country), light trail usage and durable city/touring bikes It is suitable.

  • Compatibility with Schrader automotive valve stems makes it easy to inflate your tubeless tires, even at gas stations.

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✅ WHO IS THIS WHEEL RIM IDEAL FOR?

• 🚵 For MTB / Mountain Bike Enthusiasts: For light to medium-level off-road users looking for a durable and reliable rim.

• 🛠️ Bicycle Collectors & Repairers: For those looking to build their own bike or upgrade their existing one, and searching for a quality, affordable wheel rim.

• 🏙️ Powerful City & Touring Bike Users: Those looking for a durable rim for heavy load carriers, long tours, or physically strong drivers.

• 🔧 For owners of bicycles with disc brakes: For disc brake system users whose existing rims are deformed or who want to upgrade them.

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⚠️ IMPORTANT NOTES & WARNINGS:

• It's a wheel rim, not a wheel itself. This product is for the aluminum rim only. The hub, spokes, nuts, and tires are not included. All these components are needed to create a complete rim.

• Installation Requires Professionalism: Properly connecting the wheel rim to the hub and spokes (spoofing) requires specialized tools and expertise. Incorrect spoke spacing results in an unbalanced and unsafe rim. The assembly process must be carried out by an experienced bicycle technician.

• Compliance Check: Before choosing a wheel rim, consider the existing one or the one to be purchased. Ensure that the number of holes (36H) in the wheel hub and the flange dimensions are compatible with this rim.

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📦 TECHNICAL SPECIFICATION SUMMARY:

• ETRTO Measurement: 622x19mm

• Equivalent in Inches: 28"/29"

• Structure: Double Wall

• Material: Aluminum Alloy

• Brake Compatibility: Disc Brakes (Centerlock or 6-bolt brakes should be checked with the manufacturer)

• Number of Holes: 36 (36H)

• Valve Type: Automotive Valve (Schrader) Hole

• Interior Width: 19mm

• External Width: 23mm

• Height (Depth): 25mm

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🏆 CONCLUSION:

The Vona SA19M rim is a robust and reliable option focused on price-performance. With its 36-hole design and double-layer construction, it withstands challenging conditions and provides an excellent foundation for riders who want to benefit from disc brake systems. With the right components and professional installation, it's a performance-oriented infrastructure component that will provide years of trouble-free service.

Solid Foundations, Safe Driving.