DIAZ SUSPENSION DESIGN RUPD-02 Runt Cartridge Podium Fox 2100000009251 Marzocchi 36 Z1 Forks 160MM

( Brand: Diaz Suspension Design ), ( Manufacturer Part Number: RUPD-02 ), ( Part Type: Cartridge Fork ), ( Suspension Travel: 160 Mm ), ( Compatible Model: Fox Podium 160mm ), ( Item Width: 5.00 In ), ( Item Weight: 0.3400 ), ( UPC: 100000009251 )

Review DIAZ SUSPENSION DESIGN Runt Cartridge Podium Fox 36 And Marzocchi Z1 Forks 160mm

The **Diaz Suspension Design RUPD-02 Runt Cartridge Podium** is a meticulously engineered, high-performance upgrade designed to transform the stock suspension of the Fox 36 Marzocchi Z1 forks into a precision-tuned, race-ready system capable of handling the demands of aggressive riding, high-speed cornering, and relentless trail abuse. Built with a focus on durability, responsiveness, and adaptability, this cartridge podium replaces the factory setup with a robust, low-profile design that integrates seamlessly with the existing fork internals while delivering superior compression damping, rebound tuning, and overall ride quality. The RUPD-02 features a **160mm travel** cartridge, optimized for riders seeking a balance between plush comfort and firm, predictable handling ideal for enduro, freeride, or hard-hitting trail riding where suspension performance is critical. Constructed from high-grade aluminum and reinforced with precision-machined components, the podium houses a **high-pressure, high-volume compression cartridge** that minimizes internal slop and ensures consistent damping across a wide range of speeds and terrain. The design incorporates a **direct-mount interface** with the Fox 36 Marzocchi Z1, eliminating the need for additional spacers or adapters while maintaining full compatibility with the stock fork legs. This allows for easy installation and removal, making it a straightforward yet impactful upgrade for riders looking to fine-tune their fork s behavior without sacrificing reliability. The RUPD-02 s compact footprint and aggressive tuning options cater to riders who demand a firmer, more engaged ride, reducing bottom-outs and improving pedal-through efficiency on rough terrain. Whether tackling steep descents, technical singletrack, or aggressive jumps, this podium delivers a noticeable improvement in fork performance, allowing for sharper cornering, better weight transfer, and a more controlled, responsive feel. Backed by Diaz Suspension Design s reputation for innovation and precision engineering, the RUPD-02 Runt Cartridge Podium is not just an upgrade it s a game-changer for riders pushing the limits of their Fox 36 Marzocchi Z1 forks.

### **Pros and Cons of buying a RUPD-02 Runt Cartridge for Fox 36 Marzocchi Z1 Forks (160mm Travel)**

1. **Improved Compression Performance** The RUPD-02 cartridge is designed to enhance the damping response of Fox 36 forks, particularly in the high-speed rebound and compression phases. This can lead to a more controlled, progressive feel, especially under heavy loads or aggressive riding styles.

2. **Better Tuning Flexibility** The RUPD-02 offers adjustable rebound damping, allowing riders to fine-tune the fork s response to their weight, riding style, and terrain. This can be particularly useful for riders who frequently switch between different conditions (e.g., trail riding, enduro, or racing).

3. **Compatibility with Fox 36 Forks** Since the RUPD-02 is specifically designed for Fox 36 forks, it ensures a seamless integration with the existing suspension system. This reduces the risk of compatibility issues that might arise with aftermarket cartridges from other brands.

4. **Durability and Reliability** Fox components are known for their build quality, and the RUPD-02 is no exception. It is built to withstand high-stress conditions, making it a reliable choice for serious riders who demand performance and longevity.

5. **Potential for Better Traction and Stability** A well-tuned suspension system can improve wheel contact, leading to better traction and stability, especially on technical or uneven terrain. The RUPD-02 s improved damping characteristics can contribute to this.

6. **Future-Proofing** If you plan to upgrade your bike s suspension in the future, keeping the Fox 36 forks and swapping out the cartridge (rather than replacing the entire fork) can be a cost-effective approach.

7. **Professional-Level Performance** The RUPD-02 is often used in high-performance applications, such as cross-country racing or aggressive trail riding. If you re pushing your bike to its limits, this cartridge can help extract more performance from your setup.

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1. **Cost** Replacing the stock cartridge with the RUPD-02 is not a cheap upgrade. The price point is significantly higher than a standard Fox cartridge, and if you re not a professional rider, the performance gains may not justify the cost.

2. **Complexity in Tuning** While the RUPD-02 offers more adjustability, it also requires a deeper understanding of suspension tuning. Riders who are not familiar with adjusting rebound damping or fork settings may struggle to optimize the performance correctly, potentially leading to a suboptimal or even detrimental setup.

3. **Potential for Overkill** If you primarily ride lightly or on smooth trails, the stock cartridge may already provide sufficient performance. The RUPD-02 s aggressive tuning options might feel too stiff or harsh for casual or recreational riders, leading to discomfort rather than improvement.

4. **Warranty Considerations** Modifying your fork s cartridge may void the manufacturer s warranty, especially if Fox requires the use of their original components. This is something to consider if you plan to keep your bike under warranty for future service or repairs.

5. **Learning Curve** Switching to a new cartridge means relearning how your bike handles. The RUPD-02 s different damping characteristics may require time to adapt to, and initially, you might feel less comfortable or less in control of your bike.

6. **Compatibility with Other Components** While the RUPD-02 works well with Fox 36 forks, it s important to ensure that the rest of your bike s suspension system (e.g., shock setup) is compatible. Mismatched tuning between the fork and shock can lead to poor performance or even damage.

7. **Not a Universal Fix** Suspension performance depends on many factors, including tire choice, tire pressure, rider weight, and riding style. Simply upgrading the cartridge won t solve issues caused by other components or improper setup. A holistic approach to suspension tuning is often necessary for optimal results.

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The RUPD-02 Runt Cartridge for Fox 36 Marzocchi Z1 forks is a high-performance upgrade that offers significant benefits for riders who demand precise control, improved damping response, and the ability to fine-tune their suspension. It is particularly well-suited for aggressive riders, racers, or those who frequently ride in demanding conditions where suspension performance is critical.

However, the upgrade is not without drawbacks. The cost is substantial, and the tuning process is more complex, requiring a good understanding of suspension mechanics. For casual riders or those who primarily ride on smooth terrain, the stock cartridge may already be sufficient, and the RUPD-02 could end up being unnecessary or even counterproductive.

If you re considering this upgrade, it s essential to weigh the potential performance gains against the cost and effort required. Additionally, consulting with a suspension specialist or experienced mechanic can help determine whether the RUPD-02 is the right choice for your specific riding needs and bike setup.

- You are a serious rider who frequently rides aggressively, on technical terrain, or in competitive settings.

- You have experience tuning suspension or are willing to invest time in learning how to properly adjust the RUPD-02.

- You want to maximize the performance of your Fox 36 forks and are prepared to pay for a high-quality, professional-level component.

- You plan to keep your bike for the long term and want a future-proof suspension upgrade.

- You primarily ride lightly or on smooth trails and are satisfied with your current fork performance.

- You lack experience with suspension tuning and are not willing to learn or seek professional help.

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

- You are unsure whether the upgrade will significantly improve your riding experience or if other factors (e.g., tire choice, shock setup) are limiting your performance.

In summary, the RUPD-02 is a powerful tool for riders who want to push their suspension to its limits, but it is not a universal solution. Carefully consider your riding style, budget, and goals before making the upgrade.

Details:

When the low or main air chambers pressure equalizes high small chamber, floating piston begins to move, allowing for a linear curve previously impossible in sprung forks. Mimicking the linear feel of a coil spring, but maintaining adjust ability air, RUNT is game changer for modern Suspension forks. Marzocchi Z1 Bomber. 1/2 Lb Lighter than coil conversions and only 20 grams heavier same amount of tokens or spacers.

In order to overcome the lack of support, most manufacturers have unnecessarily stiff compression damping. What is Optimal. The RUNT still uses air, so unlike a coil spring, the progressiveness of curve is infinitely adjustable. The dual positive air chamber Design creates the ideal spring rate throughout entire stroke.

Half the price of a coil conversion. NOT COMPATIBLE WITH THE 36E FOR E-BIKES. The optimal mid stroke is supportive to avoid diving and blowing through travel maintain the bikes ideal geometry. Get coil-like performance, without the coil.

This animation demonstrates the liner progression of RUNT. The optimal end stroke provides support for big hits and oh-shit moments based on each riders needs riding style. When optimizing a Suspension forks performance, the travel range is broken down into three portions, initial stroke, mid and end stroke. Built in unable progression or bottom out resistance.

All FOX 36 model's Factory, Performance, and Rhythm 2018 newer with NA2 air spring see photos. Take your Suspension to the next level with The RUNT: Easy drop-in installation. Each respective part of the travel has optimal characteristics for maximizing Suspensions performance. Maximizing the suppleness of initial stoke helps keep tires continuous contact with riding surface, and Suspension as sensitive possible to small bumps.

The optimal initial stroke helps maintain traction and small bump sensitivity. Maintains your forks air spring compatibility. How does it work. Coil like suppleness and mid-stroke support.

Ample mid-stroke support allows for better cornering and braking performance as well a more stable ride. A steady linear compression is very tough to achieve with air sprung Suspension because naturally compresses at an exponential rate. The patented Design provides a near linear compression curve for coil-like feel while maintaining infinite adjust ability. Because of this, air forks naturally lack mid-stroke support.

This contributes to a less than optimal Suspension set up, leaving riders sacrificing small bump plushness for stiffer cornering performance or vice versa. The RUNT effectively uses the progressive nature of air, providing a liner rate, and giving riders optimal Suspension performance. The issue with air springs.

part #: rupd02 price

• $225.00

specifications ribicycl:

• brand: Diaz Suspension Design
• mpn: Rupd-02
• part type: Cartridge Fork
• suspension travel: 160 Mm
• compatible model: Fox Podium 160mm
• item width: 5.00 In
• item weight: 0.3400
• upc: 100000009251

shipping ribicycl:

• carrier: USPS
• type: Calculated
• cost: $8.10
• transit: 5-11 Days
• class: Standard
• service: USPS Ground Advantage

returns ribicycl:

• policy: No Returns

seller ribicycl:

• # reviews: 55
• rating: 100.0%
• city: Reno, Nevada

offer ribicycl:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: April 17, 2026
• best offers: True
• sold: 0

general ribicycl:

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

payments ribicycl:

• wallet: Google-pay
• other
• credit card: Diners-club