Why Jerk?
Jerk, in physics defines the rate of change of acceleration, just as acceleration [A] is the rate of change of velocity [V], (Speed), Jerk is is the rate of change of acceleration, it’s the third derivative of displacement [R], (Distance). We dream up, design, prototype, produce, and sell products that assist you in your pursuit to adventure, free to move and to be wherever you desire.
Quality Engineering
Crafted with precision and durability in mind, our Mercedes Sprinter rear spare tire rack attachment is constructed from high-quality materials, built to withstand the rigors of off-road adventures and everyday use. Engineered to seamlessly integrate with your Sprinter's design, our attachment ensures a secure fit while enhancing the vehicle's aesthetic appeal.
Easy Installation
We understand that your time is valuable. That's why our rear spare tire rack attachment comes with a user-friendly installation process, requiring minimal effort to set up. Whether you're a seasoned DIY enthusiast or new to vehicle modifications, our clear instructions and included hardware make the installation process a breeze.
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Unleash Adventure
Elevate your Mercedes Sprinter Van experience with our innovative rear spare tire rack attachment. Enhances the aesthetics of your vehicle while blending form and function.
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Effortless Accessibility
Never struggle with spare tire access again - our rear spare tire rack makes retrieval a breeze and also frees up space underneath your car for additional modulation.
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Built to Endure
Ruggedly crafted by our expert technicians in the great state of Colorado to withstand the elements and keep your spare tire secure on
every journey.
X Rack
Our well-known X-Rack is handcrafted from TIG-welded aluminum for unmatched durability and style. Designed to accommodate your factory spare, a 32-33" wheel and tire, or nearly any aftermarket setup, the XR blends strength, versatility, and innovation. Unlike traditional systems, it avoids relying on your van's hinges, offering greater flexibility and compatibility with both 180 and 270 degree hinge styles.
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Mule Back Rack
The Mule Back Rack Series is a versatile and modular rack system designed for mounting bikes, cargo boxes, ski systems, and more. Featuring adjustable mounting plates along its length, it offers flexibility to position bikes lower for quick access or higher to clear other gear. Crafted from TIG-welded aluminum, the MBR is lightweight yet strong, ensuring stability and durability for your cargo.
Engineered for performance, the MBR avoids reliance on van hinges, making it compatible with both 180 and 270 degree hinge styles. Easy to customize with your preferred needs, this innovative rack is built to handle your toughest adventures with ease.
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Mule Back XL
The Mule Back XL System is a versatile and innovative solution for carrying all your essential adventure gear. From bikes and skis, to cargo boxes and fuel cans, it offers endless mounting possibilities. Featuring our FTSN (Fixed Thread Single Nut) design, you can quickly switch items to match your trip's needs.
Made from lightweight-durable aluminum, the MBXL Series combines strength with flexibility, providing a range of mounting options to create your ideal gear setup. Perfect for any journey, the Mule Back XL is built to adapt and perform.
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X Rack with Climber
The X Rack with Climber is the ultimate addition to your adventure rig, offering practicality and sleek design to complete your van build. Based on the Swing Away X Rack Wheel Carrier, this innovative system features a tire carrier that integrates a sturdy climbing aid- perfect for accessing root-mounted gear. While not a traditional ladder, the Climber provides reliable support for easy roof access.
Crafted from lightweight, TIG-welded aluminum and engineered for durability, the X Rack series eliminates the need to replace your van's original hinges. Compatible with 180 and 270 degree hinge styles, it's built to perform on even the toughest terrain.
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X Rack with Mule Back Upper
The X Rack with Mule Back Upper combines a spare tire carrier with a customizable upper section for unmatched versatility. The Mini Mule Back lets you mount fuel cans, cargo boxes, tools, and more-tailored to your adventure needs. Precision crafted from solid aluminum, the laser-cut upper plate ensures durability and reliability.
Engineered for rugged terrain, the XRMBU is built to perform in even the harshest conditions. Its multi-point mounting system provides maximum stability while maintaining your van's integrity. Easy to install with no hinge replacements required, it's the perfect solution for adventurers seeking strength and adaptability.
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Mule Back S
The Mule Back System is a versatile, innovative solution for carrying critical gear on your adventures. Whether it's bikes, skis, cargo boxes, or fuel cans, the Mule Back can handle almost anything, allowing you to configure your setup based on the needs of each trip. Thanks to our patented FTSN (Fixed Thread Single Nut) design, switching out items is quick and hassle-free, making it ideal for travelers who require flexibility.
Crafted from lightweight yet durable TIG-welded aluminum, the Mule Back System offers exceptional strength without added weight. Its thoughtful design provides multiple mounting options, enabling you to customize your gear arrangement for maximum efficiency.
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THE REVIEWS
Reports from the road
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Easy DIY
“It was so quick and easy to install by myself. 10/10 would recommend.”
– John S.
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Best Accessory
"Can't imagine a better accessory for my sprinter. It's sturdy and I already received so many compliments.”
– Jane K. -
Beautiful Design
“The tire swing arm is amazing and allowed me to add a water reservoir under the van in it's original place.”
– Rob L.