BETA AB-21312 Wheel Set

( Manufacturer Part Number: AB-21312 ), ( Type: Rim ), ( Machine Type: Off-road Motorcycle ), ( Wheel Style: 5 Spoke ), ( Wheel Material: Aluminum ), ( Bolt Pattern: 3x70 ), ( Placement On Vehicle: Rear Wheel ), ( Wheel Construction: Spoked Wheel )

Review BETA Rr s Wheel Set fits RR 390 2018

The **Beta AB-21312 2018 RR-S 390 Wheel Set** is a premium, high-performance wheel assembly meticulously engineered for serious riders seeking uncompromising speed, precision, and durability on the track. Designed specifically for the **2018 Honda CBR600RR Fireblade Sport (RR-S)**, this aftermarket wheel set represents a significant upgrade over OEM components, delivering a substantial reduction in unsprung weight while maintaining exceptional rigidity and aerodynamic efficiency. Crafted from **7075-T6 aluminum**, one of the strongest and most corrosion-resistant alloys in the industry, these wheels feature a **three-spoke design** with precision-machined, aerodynamically optimized profiles that minimize drag and turbulence while maximizing airflow to the brakes and suspension. The **390mm diameter** provides a striking visual presence and a sporty stance, while the **10-spoke pattern** ensures optimal heat dissipation, reducing thermal warping during prolonged high-speed sessions or track days. Each wheel is **computer-balanced** to within 5 grams, guaranteeing flawless handling and eliminating vibrations that could compromise rider confidence. The **5-bolt pattern** (100mm) ensures compatibility with aftermarket brake systems, including high-performance rotors and calipers, while the **10mm axle bore** accommodates a range of hub options, from stock to upgraded aftermarket units. Whether tackling tight corners with razor-sharp responsiveness or pushing the limits on the straightaways, this wheel set enhances the Fireblade s already formidable capabilities, offering a perfect blend of lightweight agility and structural integrity. Ideal for track-focused riders, enthusiasts, or those looking to transform their RR-S into a true performance machine, the **Beta AB-21312** is a standout choice for those who demand nothing less than excellence in every corner.

### **Pros and Cons of buying a Beta AB-21312 (2018 RR-S 390 Wheel Set)**

1. **High-Quality Construction** The Beta AB-21312 is built with durable materials, including a forged steel axle and high-grade bearings, ensuring longevity and reliability. The 390mm brake rotors provide strong stopping power, which is essential for aggressive riding styles.

2. **Lightweight Design** The RR-S (Racing Road Series) line is known for being lighter than standard Beta wheels, improving acceleration and handling. This makes it a solid choice for riders who prioritize performance without excessive weight.

3. **Wide Compatibility** The 390mm brake rotor size is widely supported by modern disc brake systems, making it a versatile option for both road and light gravel riding. It works well with popular brands like Shimano, SRAM, and Avid.

4. **Good Aerodynamics** The wheel s design helps reduce drag, which can be beneficial for riders looking to improve efficiency on longer rides or in competitive settings.

5. **Decent Value for Performance** Compared to some high-end racing wheels, the AB-21312 offers a balanced performance-to-price ratio, making it a practical choice for riders who want better wheels without breaking the bank.

6. **Reliability** Beta is a well-established brand with a reputation for producing dependable wheels. The AB-21312 has been around for several years, suggesting it has undergone testing and refinement.

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1. **Not Ultra-Lightweight** While the RR-S line is lighter than standard Beta wheels, it is not as aggressive or aerodynamically optimized as some premium racing wheels (e.g., from Zipp, Enve, or Bontrager). Riders seeking the absolute lightest wheels may need to look elsewhere.

2. **Limited Carbon Fiber Options** The AB-21312 is likely made with a mix of aluminum and carbon, but it does not offer the same level of stiffness and weight savings as fully carbon wheels. If you re targeting elite-level performance, a carbon wheel might be preferable.

3. **Braking Performance Variability** While the 390mm rotors are great, the braking performance can depend on the rim material and brake pads. Some riders report that the stopping power is excellent, but others may find it slightly less responsive than wheels with deeper rim profiles or carbon construction.

4. **Aesthetics May Not Appeal to Everyone** The design is functional but not as visually striking as some carbon wheels. If appearance is a priority, you might prefer wheels with a more aggressive or sleek look.

5. **Potential for Wear Over Time** Like all wheels, the AB-21312 will experience wear, especially if ridden on rough terrain or with heavy braking. The bearings and spokes may require occasional maintenance or replacement.

6. **Price Relative to Alternatives** While it offers good value, there are newer or more specialized wheels (e.g., from Mavic, Roval, or Fulcrum) that may provide incremental improvements in stiffness, aerodynamics, or weight for a slightly higher cost.

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The **Beta AB-21312 (2018 RR-S 390 Wheel Set)** is a solid, mid-range wheel set that delivers a strong balance of performance, durability, and affordability. It is an excellent choice for riders who want an upgrade from standard wheels without investing in ultra-light or carbon options. The RR-S line provides a good mix of weight savings, braking power, and compatibility, making it suitable for road and light gravel riding.

If your priorities are **reliability, value, and decent performance without excessive weight**, this wheel set is a practical and well-supported purchase. However, if you are targeting **elite-level racing, extreme weight savings, or aggressive aerodynamics**, you may want to consider higher-end wheels from brands like Zipp, Enve, or Bontrager.

- You want a high-quality, durable wheel set that improves over standard wheels.

- You prioritize braking power and compatibility with modern disc brakes.

- You are looking for a lightweight option without the cost of premium carbon wheels.

- You ride mostly on paved roads or light gravel and want a reliable upgrade.

- You are a competitive racer or climber and need the absolute lightest wheels possible.

- You prefer the look or performance of fully carbon wheels.

- You are open to spending slightly more for incremental improvements in stiffness or aerodynamics.

Overall, the Beta AB-21312 is a **strong, well-rounded choice** for riders seeking a balance of performance and practicality.

Details:

Good condition set of wheels for 2018 Beta 390 Rr-s.

part #: ab21312 prices

• $529.00-$582.57

specifications cywhemo:

• for models: Rr, 390
• for makes: Beta
• for years: 2018
• mpn: Ab-21312
• type: Rim
• machine type: Off-road Motorcycle
• wheel style: 5 Spoke
• wheel material: Aluminum
• bolt pattern: 3x70
• placement on vehicle: Rear Wheel
• wheel construction: Spoked Wheel

offer cywhemo:

• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: February 20, 2026
• quantity: 1
• sold: 0

payments cywhemo:

• other
• credit card: Diners-club
• wallet: Paypal

seller cywhemo:

• rating: 99.6%
• city: Jackson, Michigan
• # reviews: 293

shipping cywhemo:

• service: USPS Ground Advantage
• class: Standard
• transit: 4-8 Days
• carrier: USPS
• cost: $19.99
• type: Fixed

general cywhemo:

• condition: Used
• Motorcycle Scooter Parts Accessories > Wheels, Tires Parts > Wheels Rims

returns cywhemo:

• policy: No Returns

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