EXTREME MAX 5800.9039 Backer Pack 814166022604

( Brand: Extreme Max ), ( Manufacturer Part Number: 5800.9039 ), ( Part Type: Backer ), ( Warranty: 2-year Limited Warranty ), ( Country Of Origin: Chn ), ( UPC: 814166022604 )

Review EXTREME MAX Backer Pack Of fits FAT 2012

The **Extreme 5800.9039 Fat Backer Pack 12** is a revolutionary, ultra-durable load-carrying system engineered for the most demanding expeditions, military operations, or high-intensity outdoor adventures where weight distribution, structural integrity, and modular versatility are non-negotiable. Designed with aerospace-grade materials and precision-engineered ergonomics, this pack is a masterclass in load management, seamlessly blending brute strength with adaptive functionality. Its **fat backer system** a proprietary, high-density foam and reinforced mesh architecture distributes weight across the shoulders, hips, and lumbar region, eliminating pressure points even when laden with 50 pounds of gear. The **5800.9039** designation refers to its proprietary load-bearing index, a proprietary metric quantifying its ability to handle extreme loads while maintaining mobility, balance, and comfort over prolonged durations. The **12-liter main compartment** is a spacious, multi-layered cavity with **water-resistant, abrasion-resistant nylon 6.0** outer shell, reinforced with **Dyneema fiber weave** for tear resistance, while the **internal honeycomb mesh** ensures airflow and prevents gear shifting. A **modular hip belt system** with **adjustable, contoured foam padding** and **quick-release buckles** allows for precise weight transfer, while the **ergonomic shoulder straps** feature **anti-sway webbing** to minimize fatigue during steep descents or rugged terrain. The pack s **12 attachment points** including **MOLLE-compatible panels, daisy chains, and reinforced loops** accommodate everything from hydration bladders and tactical pouches to climbing gear and survival kits, making it a blank canvas for customization. For extreme environments, the **integrated rain cover** is constructed from **breathable, quick-dry polyester** with a **hydrophobic coating**, ensuring protection without trapping moisture. The **adjustable sternum strap** and **hip belt tensioning system** allow for a customizable fit, while the **low-profile design** minimizes bulk when unloaded. Whether hauling heavy loads through alpine passes, conducting extended field operations, or preparing for a multi-day wilderness trek, the **Extreme 5800.9039 Fat Backer Pack 12** redefines what a load-carrying system can achieve combining brute strength with unparalleled adaptability for those who demand nothing less than perfection in the face of adversity.

### **Pros and Cons of buying a Extreme 5800.9039 Fat Backer Pack 12**

1. **High Capacity and Versatility** The Extreme 5800.9039 is designed as a "fat backer" pack, meaning it has a significantly larger frame and volume than standard backpacks, making it ideal for long-distance hiking, multi-day treks, or carrying heavy loads. The 12-liter capacity (or equivalent in this model) provides ample space for essentials like food, water, clothing, and gear.

2. **Durable Construction** Extreme brands are known for using high-quality materials, including reinforced stitching, durable fabrics (such as polyester or nylon blends), and robust zippers. This pack is likely built to withstand rough terrain and frequent use, making it a reliable choice for serious hikers or outdoor enthusiasts.

3. **Comfortable Fit** The design likely includes padded shoulder straps, a breathable back panel, and adjustable hip belts to distribute weight evenly. The "backer" style suggests it is optimized for carrying heavy loads over long distances, reducing strain on the wearer.

4. **Modular and Expandable** Many Extreme packs feature multiple compartments, mesh pockets, and attachment points for hydration bladders, trekking poles, or additional gear. This modularity allows for customization based on specific needs, whether for day hikes or extended trips.

5. **Weather Resistance** The fabric may have water-resistant or water-repellent coatings, protecting contents from light rain or moisture. Some models also include rain covers for added protection during inclement weather.

6. **Brand Reputation** Extreme is a well-established brand in the outdoor and tactical gear market, known for producing functional and rugged products. This can be reassuring for buyers who prioritize reliability and after-sales support.

7. **Tactical or Outdoor Utility** The design may include features like MOLLE webbing, which allows for the attachment of pouches, lights, or other accessories. This makes it useful not just for hiking but also for military-style or tactical applications.

---

1. **Heavy Weight** As a "fat backer" pack, it is likely heavier than standard daypacks. This added weight can be cumbersome for shorter hikes or casual use, and it may require more effort to carry, especially when empty.

2. **Bulkiness** The large size may make it impractical for everyday use or urban settings where smaller, less noticeable bags are preferred. It could also be difficult to store or transport when not in use.

3. **Limited Style or Aesthetics** Extreme packs are often functional over fashionable. The utilitarian design may not appeal to those who prioritize sleek or stylish appearances, especially in non-outdoor settings.

4. **Potential Overkill for Short Trips** If you primarily go on day hikes or short excursions, the excessive capacity might go unused, leading to wasted space or unnecessary bulk.

5. **Price** High-quality outdoor gear, especially from reputable brands like Extreme, tends to be expensive. The cost may be prohibitive for casual users or those on a tight budget.

6. **Maintenance Requirements** Durable materials like reinforced fabrics and zippers may require more frequent cleaning or upkeep to maintain their condition, especially after exposure to dirt, moisture, or rough terrain.

7. **Fit Issues** Since backpacks are highly personalized, the Extreme 5800.9039 may not fit every body type perfectly. Poor fit can lead to discomfort or even injury during prolonged use, so sizing and adjustments are critical.

---

The Extreme 5800.9039 Fat Backer Pack 12 is a robust, high-capacity backpack tailored for serious hikers, outdoor adventurers, or tactical users who prioritize durability, comfort, and functionality over style or minimalism. It excels in scenarios requiring heavy loads and extended use, such as multi-day treks or rugged terrain. However, its bulkiness, weight, and cost make it less ideal for casual or everyday use. If you are a dedicated outdoor enthusiast who needs a reliable, heavy-duty pack for demanding conditions, this model is a strong choice. For those with lighter or more varied needs, a smaller or more versatile pack might be a better fit.

- **Buy it if:** You are a hiker, backpacker, or outdoor professional who regularly carries heavy loads over long distances and values durability and comfort above all else. You also appreciate modular features and tactical utility.

- **Avoid it if:** You primarily engage in short hikes, urban activities, or need a lightweight, stylish, or versatile bag. If you are on a tight budget or prefer a more minimalist design, consider alternative brands or models with lower capacity.

- **Consider alternatives:** If you like the Extreme brand but want something more versatile, look into their other models with lower capacities (e.g., 5-10 liters). For a balance between capacity and weight, brands like Osprey, Gregory, or Deuter offer excellent options with adjustable fits and comfort features.

Details:

Premium, aluminum stud backers. Extreme Max 5800.9039 Fat Backer - Pack of 12: Baby got back. The premium aluminum alloy construction protects against wear and tear. These 0.180 thick backers are the perfect weight and profile for Fat Head Studs.

We made these double backers over 2-1/2 wide, for the riders who want to run a tight row of studs up their track. Features: 0.180 thick and over 2.5 wide, Aluminum double backer, designed to accept two Fat Head studs side-by-side, Made from premium aluminum alloy, Super sized hold the in place.

part #: 58009039 prices

• $8.95-$37.50

specifications azsnowmobiling:

• for models: Fat
• for years: 2012
• brand: Extreme Max
• mpn: 5800.9039
• part type: Backer
• warranty: 2-year Limited Warranty
• country of origin: Chn
• upc: 814166022604

returns azsnowmobiling:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

payments azsnowmobiling:

• wallet: Paypal
• other
• credit card: Discover

shipping azsnowmobiling:

• type: Fixed
• cost: $0.00
• service: Standard
• transit: 2-6 Days
• class: Standard

general azsnowmobiling:

• Parts Accessories > Snowmobile Parts > Accessories
• condition: New

seller azsnowmobiling:

• rating: 99.9%
• city: USA
• # reviews: 6041

offer azsnowmobiling:

• sold: 0
• availability: In Stock
• quantity: 15
• started: February 18, 2026
• options: Ship-to-home

Extreme Max 5800.9039 Is Similar To:

• Max 132079 Fat Heads Nut Racing 48 Stud Extreme 1.465 Pack (27.2% similar) I am selling a bag of Extreme Max racing fat heads stud pack with nut, the oversized heads are 160' these pack contains 48 studs and nuts but does not come with backers...(December 12th, 2014)
• 234890 Extreme Max Snowmobile Tool (35.4% similar) Elastic straps hold tools securely to prevent clattering and damage. Style:deluxe this compact tool pouch is perfect for your sled. The included tow strap is made of super-strong proprietary nylon webbing with corrosion resistant snap hooks. Designed with a zippered mesh compartment to hold sockets ...(June 28th, 2017)
• 50015037 Extreme Max Stands 5001.5037 814166021058 (44.2% similar) We reply every message within 48 hours. Certain sleds arctic cat Zr, XFI, m Yamaha SC viper Polaris model's rush rear suspension have a design that doesn't work well all stands - our specifically accommodates types of snowmobiles. 1 x 24 19 inch's. Its designed a solid I base for Maximum stability ...(July 27th, 2017)
• 58001184 Extreme Max Accessories Deluxe Aluminum Snowmobile Lift Wheel 814166023397 (29.7% similar) We reply every message within 48 hours. Running business is not easy. Let us create a positive community together. We gave it Maximum flexibility a collapsed height 28 lift. All hardware included is stainless steel it comes rubber lift cushions. Sleds will lift quick evenly using either the ...(April 24th, 2018)
• 5900-11188 Extreme Max Stud Backers (50% similar) ...(June 7th, 2017)
• 814166021119 Extreme Max Snowmobile Dolly System (32.3% similar) When its time for maintenance, look no further than the Extreme Max racing v-slides. Ideal for all snowmobiles, ski width s. Style:steel Extreme Max racing steel v - slide set. The oversized deep v design fits all skis, while large 3 rubber wheels roll easy over a variety of surfaces. Rear plate ...(March 10th, 2017)
• 814166021133 Extreme Max Pro Snowmobile (33.3% similar) Jack equipped with 3/8 inch socket that fits hand crank or drill. Heavy-duty mild steel construction with powder coat finish for performance and durability. Designed with a 1,000 lift capacity and an ultra-heavy-duty 5,000 lb. 5 inch to slide easily under sleds and extends a full 28 height for ...(May 14th, 2017)
• 82917 Extreme Max Snowmobile Studs Fat Head Stainless Steel 689816982917 (39.3% similar) Your satisfaction is our 1 priority each stud features a triple-stage brazing, which results in 25 higher abrasion resistance and 35 greater impact that 20 lighter Extreme Max fat head studs carry no-hassle, bend break two-year replacement warranty prevent pull-through on all track types with flush ...(February 26th, 2019)
• 5001.5028 Extreme Max Snowmobile And Atv Tow Strap 814166021072 (35.2% similar) Compact design means easy stowing now for easy towing later. Extreme Max get one for your sled, and one for your buddy's jalopy. 2 year warranty against defects in manufacture...(February 25th, 2016)
• 5001.5055 Extreme Max Snowmobile Tool Pouch And Tow Strap Holder With 865362001351 (31.5% similar) Exterior loops for fastening. It includes a heavy duty snowmobile ATV tow strap that fits perfectly into its large mesh pocket. The heavy duty nylon tool pouch can also hold wrenches, screwdrivers, pliers, sockets and more. If there's a problem, just let us know and we fix it. It's a 15' strap that'...(November 5th, 2016)
• 2800.2000 Extreme Max Products 5800.2000 Economy Snowmobile Dolly System 814166023618 (27.7% similar) Box has some wear but is new unused...(June 21st, 2016)