Product details
Reese 58520 fifth wheel rail spacer kit
Need a straightforward spacer to get your fifth wheel rails sitting properly? This Reese spacer kit fills the corrugation gap under the rails so the mount sits flat — which makes hitching and towing far less faff. It’s a tidy little bit of kit plenty of folk don’t think about until they’re fitting a rail kit and discover the truck bed corrugations are in the way.
What it does and why it helps
The spacer kit sits under the fifth wheel rails to level out corrugated truck beds, preventing uneven contact and cutting down stress on the rail fixings. The upshot is a firmer, more consistent mounting surface for your hitch and a lower chance of bolts working loose over time. Want to keep full bed access with the rails fitted? This kit is designed to let you do just that — no more faffing about removing rails to load the bed.
- Levels out corrugations so the rails sit flat and true.
- Reduces movement and wear at rail attachment points.
- Makes fitting the rail kit quicker and far less fiddly.
- Helps maintain full access to the truck bed when rails are installed.
Compatibility and specs
Made for use with Reese fifth wheel rail kits — specifically compatible with part numbers 30035, 30153 and 58058. Note that some listings show manufacturer model number 58503 while the product is commonly referenced as 58520; it’s worth double-checking your kit parts before buying. If you’re unsure, match the rail kit numbers above to be safe.
- Manufacturer: Reese Towpower
- Compatible rail kits: 30035, 30153, 58058
- Item model numbers encountered: 58503, 58520
- Product dimensions: 20.32 x 27.94 x 1.27 cm
- Item weight: approx. 249 g
Typical use cases
Ideal if you’re fitting a fifth wheel rail kit to a corrugated truck bed and want a neat, secure installation. Great for weekend caravanning, work trailers or anyone who frequently fits and removes a fifth wheel hitch. Rather than guessing where to shim or resorting to temporary fixes, this kit helps the rails sit right first time.
Final notes
Quick to fit, keeps the bed accessible and makes the whole rail-and-hitch installation much neater. You may spot differing model numbers across suppliers — if that bothers you, double-check compatibility with the listed rail kit numbers. Overall, it’s a small, inexpensive bit of kit that saves hassle and helps the rails do their job properly.