FOX 979-63-039 Float Performance Air Rear Shock 230X62.5MM

( Brand: Fox ), ( Manufacturer Part Number: 979-63-039 ), ( Part Type: Air Float ), ( Eye To Eye Measurement: 230 Mm ), ( Color: Black ), ( Set Includes: Rear Shock ), ( Material: Aluminum ), ( Shock Type: Air Shock ), ( Compatible Bike Type: Mountain Bike ), ( Stroke Length: 62.5 Mm )

Review FOX Float Performance Series Air Rear Shock 230x62.5mm Black Aluminum

The **Fox 979 Float Performance Air Rear Shock** (part number 63-03-039) is a high-performance, air-suspended shock designed to deliver unmatched comfort, control, and adaptability for demanding off-road and trail riding applications. Engineered with Fox s legendary precision and cutting-edge technology, this shock is a cornerstone of modern suspension systems, catering to riders who demand responsiveness, durability, and customizable tuning. Built with a **230mm x 62.5mm** air spring, this shock combines a robust, high-pressure air canister with a seamless integration of Fox s **Float Performance** technology, which optimizes rebound damping for a smoother, more engaging ride. The shock features a **high-performance rebound valve** that enhances energy return, reducing bottoming and improving traction on rough terrain, while the **adjustable rebound damping** allows riders to fine-tune responsiveness for varying conditions whether it s aggressive trail riding, enduro racing, or heavy-duty off-roading. Constructed from high-grade materials, including a **durable aluminum housing** and a **corrosion-resistant air spring**, this shock is built to withstand extreme forces, ensuring longevity even under the most punishing conditions. The **Fox Float Performance** system also incorporates a **low-friction piston design**, reducing internal wear and extending the shock s lifespan while maintaining consistent performance. Whether paired with a full suspension setup or used as part of a rear-link system, this shock excels in absorbing impacts, maintaining stability, and providing a balanced ride quality that adapts seamlessly to different terrains. Ideal for riders seeking a premium, high-performance suspension solution, the Fox 979 Float Performance Air Rear Shock sets a new standard for versatility and reliability in off-road applications.

### **Pros and Cons of the Fox 979 Float Performance Air Rear Shock (230x62.5mm)**

1. **High-Quality Construction** Fox is a well-respected brand in the cycling industry, known for durable and reliable components. This shock is built to withstand heavy use, making it suitable for aggressive riding styles.

2. **Adjustable Float Technology** The Float Performance system allows for precise tuning of rebound and compression damping, which can significantly improve ride feel and control. This is particularly useful for riders who need to fine-tune their suspension for different terrains or body weights.

3. **Air-Spring System** The air-spring design provides excellent adjustability in terms of sag and stiffness. Riders can fine-tune the shock s responsiveness to match their weight, riding style, and trail conditions, leading to better performance and comfort.

4. **Durability and Longevity** Fox shocks are known for their robustness, especially in demanding conditions. The 979 model is designed for performance-oriented riders, meaning it can handle rough trails without frequent maintenance or failure.

5. **Compatibility with Modern Bikes** This shock is designed to fit a wide range of downhill and enduro bikes, making it a versatile choice for riders who may switch between different bikes or upgrade their setup.

6. **Performance-Oriented** The Float Performance system is optimized for aggressive riding, offering better control and responsiveness compared to basic shocks. This makes it ideal for downhill, enduro, and freeride disciplines where precision is crucial.

7. **Easy Maintenance** Fox shocks are relatively straightforward to service, with accessible components for oil changes and seal replacements. This can extend the shock s lifespan if properly maintained.

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1. **High Cost** Fox shocks are premium products, and this model is no exception. The price point may be prohibitive for casual riders or those on a tight budget. A high-quality air shock like this can cost significantly more than basic coil or air shocks from other brands.

2. **Complexity** The adjustability of the Float Performance system means there s a learning curve. Riders may need to spend time experimenting with settings to optimize performance, which can be frustrating for beginners or those who prefer simplicity.

3. **Maintenance Requirements** While Fox shocks are durable, they do require regular maintenance, such as oil changes and seal inspections. Neglecting maintenance can lead to premature wear or failure, especially in demanding conditions.

4. **Weight** Air shocks, including this Fox model, tend to be heavier than coil shocks or basic air shocks. This added weight can slightly impact the bike s handling, though the difference is often negligible for most riders.

5. **Potential for Overkill** For casual riders or those who primarily ride on smooth trails, the advanced features of this shock may not be necessary. A more affordable shock could suffice without sacrificing performance.

6. **Compatibility Issues** While the shock is designed for a wide range of bikes, compatibility can vary depending on the specific frame and fork setup. Riders should double-check measurements and mounting points to ensure a proper fit.

7. **Resale Value** Like many high-end components, Fox shocks may not retain their value as well as some other brands. If resale is a consideration, the depreciation could offset some of the initial cost.

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The Fox 979 Float Performance Air Rear Shock (230x62.5mm) is a top-tier suspension component designed for serious riders who demand precision, adjustability, and durability. It excels in aggressive riding conditions, offering superior control and responsiveness compared to basic shocks. However, its high cost, complexity, and maintenance requirements make it less ideal for casual riders or those on a budget. If you prioritize performance, fine-tuning capabilities, and long-term reliability, this shock is an excellent investment. For riders who primarily ride smooth trails or prefer simplicity, a more affordable shock may be a better fit.

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- You are a downhill, enduro, or freeride rider who demands high performance and adjustability.

- You are willing to invest in a premium component that will enhance your riding experience significantly.

- You are prepared to learn and maintain the shock properly to maximize its lifespan and performance.

- Your bike s setup and frame are compatible with the Fox 979.

- You are a casual rider or primarily ride on smooth trails where a more affordable shock would suffice.

- You are uncomfortable with the complexity of tuning suspension settings.

- You are on a tight budget and cannot justify the cost of a high-end air shock.

- You lack the time or inclination to perform regular maintenance on the shock.

For most aggressive riders, the Fox 979 is a worthwhile upgrade that will pay off in improved control and confidence on the trail. For others, it may be overkill, and a more budget-friendly option could provide similar benefits without the premium price tag.

Details:

Brand: FOX, model: Float X Performance, Year: 2022, Part Number: 979-63-039, Shock Type: Air EVOL LV Extra Volume, Eye-to-Eye: 230mm, Stroke: 62.5mm, Mount Grunion, Adjustment: 2-Position Open / Firm, Rebound: Adjustable, Compression: Pre-set Performance series, Color: Black, OEM Fitment: Specialized Geneva SL, condition: Used see /photos FOX Performance 2022 979-63-039 Volume 230mm 62.5mm Grunion Firm Adjustable series Black SL /photos.

part #: 97963039 prices

• $129.04-$229.90

specifications ribicycl:

• brand: Fox
• mpn: 979-63-039
• part type: Air Float
• eye to eye measurement: 230 Mm
• color: Black
• set includes: Rear Shock
• material: Aluminum
• shock type: Air Shock
• compatible bike type: Mountain Bike
• stroke length: 62.5 Mm

general ribicycl:

• Cycling > Bicycle Components Parts > Rear Shocks
• condition: Used

offer ribicycl:

• sold: 0
• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: April 23, 2026
• quantity: 1

shipping ribicycl:

• service: USPS Ground Advantage
• transit: 5-11 Days
• carrier: USPS
• cost: $8.46
• type: Calculated
• class: Standard

seller ribicycl:

• # reviews: 21
• rating: 100.0%
• city: Oceanside, California

returns ribicycl:

• policy: No Returns

payments ribicycl:

• money order
• wallet: Apple-pay
• credit card: Discover
• other

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