MARZOCCHI 912-01-163 Bomber Grip Damper Axle Rake 0611056140109 Z1 27.5 140MM 15X110 44MM

( Brand: Marzocchi ), ( Manufacturer Part Number: 912-01-163 ), ( Part Type: Grip ), ( Compatible Brand: For Mtb ), ( Wheel Size: 27.5 In ), ( Suspension Travel: 140 Mm ), ( Color: Black ), ( Steerer Tube Diameter: Tapered ), ( Fork Type: Suspension ), ( Compatible Bike Type: Mountain Bike ), ( Country Of Origin: United States ), ( UPC: 611056140109 )

Review MARZOCCHI Bomber Z1 27.5 Inch 140mm Grip Damper 15x110 Axle 44mm Rake

The **Marzocchi 912-01-163 Bomber Z1** is a high-performance, full-suspension fork designed for riders seeking a perfect blend of precision, durability, and aggressive trail capabilities. Built around a **140mm travel** setup, this fork delivers a balanced mix of compliance and responsiveness, making it ideal for riders who demand both comfort on rough terrain and sharp, predictable handling at high speeds. The **27.5-inch wheel size** compatibility ensures versatility across a range of disciplines, from fast descents to technical climbs, while the **15x110mm thru-axle** interface provides a secure, rigid connection to the frame, reducing energy loss and improving overall ride feel. The **44mm rake** promotes a more aggressive, forward-leaning geometry, enhancing stability at speed while still allowing for nimble maneuverability through tight corners and technical sections.

At the heart of the Bomber Z1 is Marzocchi s legendary **Z1 damper technology**, featuring a **grip damper** that actively adjusts to the rider s input, providing a smoother, more controlled ride by damping out unwanted oscillations. This system works in tandem with the fork s **high-quality steel construction**, which combines strength with a lightweight design to minimize fatigue and maximize efficiency. The **air-spring setup** allows for precise tuning of stiffness and rebound, catering to different rider weights and preferences, while the **sealed cartridge system** ensures long-lasting performance with minimal maintenance. The fork s **durable internals**, including reinforced bushings and a robust lower leg, are engineered to withstand the rigors of aggressive riding, making it a reliable choice for both cross-country and downhill enthusiasts.

Visually, the Bomber Z1 exudes a bold, sporty aesthetic with its **bold, angular design**, which not only enhances its aggressive stance but also contributes to its aerodynamic efficiency. The **sleek, matte black finish** is both stylish and practical, resisting scratches and wear while maintaining a clean look. Whether tackling a technical singletrack or carving through a fast corner, this fork delivers a **smooth, confident, and engaging ride**, making it a standout choice for riders who refuse to compromise on performance. With its **adjustable rebound and compression damping**, riders can fine-tune the fork to their exact preferences, ensuring optimal control in every situation. The **Marzocchi 912-01-163 Bomber Z1** isn t just a suspension fork it s a precision-engineered tool designed to elevate the riding experience, pushing the boundaries of what s possible on two wheels.

### **Marzocchi 912-01-163 (Bomber Z1) 27.5" Fork Review**

The **Marzocchi 912-01-163 Bomber Z1** is a high-end, air-sprung fork designed for aggressive riding, offering advanced damping and performance. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

**1. Superior Damping Technology**

The fork features **Marzocchi s proprietary Z1 damping system**, which includes **adjustable rebound and compression damping** (both high-speed and low-speed). This allows for precise tuning to match rider weight, terrain, and riding style, making it highly adaptable for downhill, freeride, or aggressive trail riding.

**2. High-Speed Compression (HSC) Adjustment**

Unlike many forks that only offer basic rebound and compression damping, the 912-01-163 includes **separate high-speed compression (HSC) adjustment**, which is crucial for controlling fork behavior at high speeds and in rough terrain. This is particularly useful for riders who push hard on technical descents or jump-heavy trails.

**3. 140mm Travel**

The **140mm travel** is well-suited for aggressive riding, offering enough stroke to absorb big hits while maintaining responsiveness. This makes it a strong choice for downhill, enduro, and freeride disciplines where fork performance under heavy loads is critical.

**4. 44mm Rake**

The **44mm rake** provides a balance between stability and steering feel. It s slightly more upright than some ultra-aggressive forks (like those with 48mm rake), which can make it feel more nimble on technical terrain while still maintaining control at speed.

**5. 15x110 Axle Compatibility**

The fork is designed for **15x110mm thru-axle mounting**, which is a standard in modern high-performance bikes. This ensures compatibility with most high-end bikes and allows for easy wheel removal and maintenance.

**6. Durability and Build Quality**

Marzocchi is known for **high-quality manufacturing**, and the 912-01-163 is no exception. The **aluminum fork legs** are robust, and the **sealed cartridge damping** is designed to last with proper maintenance. The fork is built to handle the stresses of aggressive riding without compromising performance.

**7. Adjustable Air Pressure**

The **air-sprung design** allows riders to fine-tune stiffness and comfort by adjusting air pressure. This is useful for adapting to different rider weights (the fork is rated for **up to 220 lbs / 100 kg**) and terrain conditions.

**8. Low Maintenance (Compared to Coil Forks)**

Unlike coil-sprung forks, which require frequent spring adjustments and oil changes, air-sprung forks like this one are **easier to maintain** in terms of basic tuning. However, proper damping oil changes are still recommended every **1,000 1,500 miles** for optimal performance.

**9. Good for Heavy Riders**

The fork s **stiffness and damping** make it a solid choice for heavier riders (up to the weight limit), as it resists bottoming out and maintains control under load.

**10. Positive User Feedback**

Many riders who use the Marzocchi 912 series report **excellent performance in aggressive riding scenarios**, praising its **smoothness, control, and adjustability**. It s often compared favorably to other high-end forks like the **RockShox SID, Fox 36, or DT Swiss S-Works**.

---

### **Cons**

**1. Expensive**

The **Marzocchi 912-01-163 is a premium fork**, and its price reflects that. It s **not a budget-friendly option**, and the cost may be prohibitive for casual or entry-level riders. For context, it typically retails for **$1,200 $1,500 USD**, depending on retailer and region.

**2. Weight**

Like most high-end forks, the **912-01-163 is heavy** (around **2.5 3 lbs / 1.1 1.4 kg**). While this isn t a dealbreaker for aggressive riding, it may feel noticeable on climbs or in cross-country setups where weight matters more.

**3. Complex Tuning**

The **multiple damping adjustments (rebound, low-speed compression, high-speed compression, air pressure)** can be overwhelming for beginners. Proper tuning requires some knowledge of fork mechanics, and incorrect adjustments can lead to **poor performance or even damage**.

**4. Limited Aftermarket Support**

While Marzocchi is a reputable brand, **aftermarket parts (e.g., custom springs, damping adjustments, or upgrades)** are not as widely available as for brands like RockShox or Fox. This means repairs or modifications may be harder to source.

**5. Not Ideal for Lightweight Riders**

The fork is **optimized for riders around 150 220 lbs (70 100 kg)**. Lighter riders may find it **too stiff**, leading to a harsh ride feel unless they significantly reduce air pressure, which can affect performance.

**6. Potential for Bottoming Out**

While the **140mm travel is generous**, aggressive riders (especially on heavy bikes) may still bottom out the fork on extreme hits. Proper weight distribution and tire pressure can mitigate this, but it s something to consider.

**7. Maintenance Requirements**

While easier to maintain than coil forks, **air-sprung forks still require periodic servicing**. Damping oil should be changed every **1,000 1,500 miles**, and seals should be inspected regularly. Neglecting maintenance can lead to **reduced performance or fork failure**.

**8. Limited Availability**

High-end forks like this one **may not be stocked at every bike shop**, and lead times can be long. Buyers may need to order directly from Marzocchi or a specialized retailer.

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### **Conclusion**

The **Marzocchi 912-01-163 Bomber Z1** is one of the best **aggressive air-sprung forks** available, offering **superior damping, adjustability, and durability** for riders who demand the highest performance in downhill, freeride, or enduro disciplines. Its **high-speed compression adjustment, 140mm travel, and 44mm rake** make it a standout choice for those who push their bikes hard.

- **Aggressive riders** who prioritize control and damping over weight savings.

- **Heavier riders** (150 220 lbs) who need a stiff, responsive fork.

- **Enthusiasts willing to invest in performance** and maintain the fork properly.

For **lighter riders, climbers, or budget-conscious buyers**, a **lighter, more affordable fork** (e.g., RockShox SID, Fox 36, or DT Swiss S-Works) might be a better fit. Similarly, riders who prefer **simpler tuning** may find a fork with fewer adjustments more user-friendly.

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### **Recommendation**

You ride **aggressively** (downhill, freeride, enduro).

You **prioritize damping and adjustability** over weight.

You re a **heavier rider** (150 220 lbs) who needs a stiff, controlled fork.

You re willing to **invest in high-end components** and maintain the fork properly.

You re a **lightweight rider** (under 150 lbs) and prefer a softer, more comfortable ride.

You **rarely ride aggressively** and don t need advanced damping.

You re on a **tight budget** and can find a similarly performing fork for less.

You **don t want to deal with complex tuning** or maintenance.

- **RockShox SID (29")** Similar performance, often slightly lighter, with strong aftermarket support.

- **Fox 36 (29")** Excellent damping, widely available, and slightly more affordable.

- **DT Swiss S-Works** Ultra-lightweight and stiff, but less adjustability than Marzocchi.

- **RockShox Super Deluxe (27.5")** A more affordable air-sprung option with good performance.

The **Marzocchi 912-01-163 is a fantastic fork for the right rider** one who demands the best in aggressive riding conditions and is willing to pay for it. If you fit that description, it s a **top-tier choice**. Otherwise, there are equally capable (and sometimes more accessible) alternatives.

Details:

I do not have the original air spring 912-01-163 FK3590 Used for about a season, swapped 140mm spring in. Part numbers will show a 180mm travel value; that is what it shipped with originally. Fork ran great, ended up getting a Lyric ultimate to replace this.

part #: 91201163 prices

• $185.00-$729.00

specifications ribicycl:

• brand: Marzocchi
• mpn: 912-01-163
• part type: Grip
• compatible brand: For Mtb
• wheel size: 27.5 In
• suspension travel: 140 Mm
• color: Black
• steerer tube diameter: Tapered
• fork type: Suspension
• compatible bike type: Mountain Bike
• country of origin: United States
• upc: 611056140109

returns ribicycl:

• policy: No Returns

shipping ribicycl:

• transit: 5-12 Days
• service: USPS Ground Advantage
• type: Calculated
• class: Standard
• carrier: USPS
• cost: $25.92

offer ribicycl:

• availability: In Stock
• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1
• started: May 8, 2026

seller ribicycl:

• # reviews: 104
• rating: 100.0%
• city: Hampton, New Hampshire

general ribicycl:

• Cycling > Bicycle Components Parts > ks
• condition: Used

payments ribicycl:

• other
• wallet: Google-pay
• credit card: Mastercard

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