Capper Lift & Seal Kit
Works with Bed Lengths up to 7ft
Achieve a perfectly level bed rail with the Capper Lift & Seal Kit, designed to work seamlessly with STAPLL Fender Rack Brackets. Whether you’re pairing your STAPLL Brackets with tonneau covers or bed cappers, this kit ensures a stable and even mounting surface as well as a weather tight seal for ultimate security and functionality.
Each Kit Includes:
- 2x 10ft Rubber Rolls
- 20ft of Butyl Seal Rubber
- 6ft Bulb Seal for the Tailgate
Key Features:
- Easy Install: This kit installs easily and can be completed by anyone with basic tools and general DIY experience.
-
Dimensions:
- 14mm x 2.5" x 10'
- 14mm x 2.5" x 10'
- Customizable Length: The Kit comes with two 10ft rolls, allowing you to cut custom lengths to fit your configuration.
- Enhanced Stability: Fills gaps between brackets and bed rails to create a flush, even, weather tight surface.
- Durable Construction: Built to last under tough conditions, ensuring long-term performance.
The Capper Lift & Seal Kit makes it easier to integrate your brackets with other truck accessories while maintaining a secure and polished fit.
- Ships in 1–3 business days. Learn more
- Hassle-free returns. Learn more
- Vehicle fit guarantee. Learn more
- Limited lifetime warranty on racks and 1 year on accessories. Learn more
- Easily install yourself, or have it professionally installed. Find a Certified Installer
- Customer support available 7 days/week.
Finish the build.
All accessories →- 1/2" H x 2.5" W x 10' L - Thick Dense 70A Neoprene Rubber
- 2x 10ft Rubber Rolls
- 20ft Butyl Seal Tape
- 8ft Large Bulb Seal
- 6ft Small Bulb Seal
- 10ML Liquid Gasket Maker
Why buy from STAPLL? Because we don't just sell racks — we invented the category. STAPLL was founded by two brothers in Durango, Colorado who spent years in the garage solving the same problem you have: how to carry more gear without sacrificing your truck bed. The result is the patented MTMS™ platform — the only no-drill system that turns the dead space beside your bed into organized, accessible storage.
When you buy from STAPLL, you're backed at every step. Every rack is guaranteed to fit your truck or your money back, built from anodized aluminum, powder-coated steel, and stainless hardware to survive the trail, and covered by our lifetime warranty. Real people answer your questions seven days a week, and if your setup is unusual, we'll get on a call and map out the cleanest build with you.
We ride what we build, and we stand behind it for life. That's the STAPLL difference — engineered by people who'd rather be outside, for the ones who feel the same.
Capper Lift & Seal Kit.
If your capper or tonneau seals to the bed rail, the rack has to pass underneath it. The Lift & Seal Kit fills the gap the brackets create — giving you a smooth, stable, weather-tight surface to mount to, so you don't sacrifice the integrity of your cover.
- Lifts the cover just enough for the bracket to pass beneath it.
- Seals the gap so your bed stays weather-tight — no leaks, no compromise.
- Levels the surface for a flat, stable mount across the whole rail.
