CURT S25 5th Wheel Slider (25K) | 16574

The CURT S25 5th Wheel Slider (25K) (Part #16574) is a heavy-duty 5th wheel slider designed to provide critical turn clearance between the truck cab and 5th wheel trailer during tight maneuvers. Rated to 25,000 lb gross trailer weight. Uses CURT's signature true-rolling design (rolls on wheels that bear the load) with ~12" of rearward displacement — more than typical 10" competitor sliders. Locks securely into both extended and retracted positions. Mounts on industry-standard 5th wheel base rails. Backed by CURT's limited lifetime warranty.

About CURT 5th Wheel Sliders

CURT 5th wheel sliders are engineered to provide critical turn clearance between a truck cab and 5th wheel trailer during tight maneuvers — especially important for short-bed truck configurations where a fixed-position hitch would allow the trailer nose to strike the cab. Meaningful highlights:

• ⭐ True rolling design — CURT sliders roll on wheels that bear the trailer weight, rather than sliding on hollow rods (as seen in many competitor slider designs)
• ⭐ ~12" of rearward displacement — CURT sliders provide more clearance than typical 10" competitor sliders
• ⭐ Locks securely into each position (extended and retracted)
• ⭐ Thick operating handle — smooth roll forward/back operation
• Industry-standard mounting — installs on industry-standard 5th wheel base rails

⭐ Compatible with Which CURT Hitches?

The S25 slider (25K rating) is designed to be paired with the following CURT 5th wheel hitch heads:

• A25 series (25K premium hitches) — used in A25 sliding configurations
• A20 series (20K premium hitches) — can be used as an upgrade slider (rating capped at 20K by A20 head)
• Also compatible with older/competitor hitches with industry-standard rail leg mounting

Weight capacity is limited to the lowest-rated towing component.

⭐ True Rolling vs Hollow-Rod Sliders

Standout engineering benefit: CURT's true rolling design places the trailer weight on wheels that roll smoothly forward and rearward within the slider frame. Many competitor sliders use a hollow-rod design where the hitch slides friction-fit along steel rods — this creates:

• More friction — harder to operate under load
• Rod wear over time — eventual bushing/rod replacement
• Load handling limitations

The CURT true-rolling design is smoother, more durable, and easier to operate under any load condition.

⭐ ~12" of Rearward Displacement

Standout capacity: ~12" of rearward hitch travel. This is more than the typical 10" offered by many competitor sliders, giving buyers additional turning-radius margin. Meaningful for short-bed trucks (6.5' beds) where extra clearance means the difference between clean turns and cab contact.

Lower Capacity or Complete Puck Kit Available

• S20 Slider (20K) - #16564 — for E16/A16/A20 5th wheel hitches
• S25 Slider + Puck Adapter Kit - #16679 — for puck-equipped Chevy/Ford/GMC trucks

Cross-Reference Part Numbers

• Part Number: 16574
• UPC: 612314052097

⚠️ Professional Installation Recommended

The slider assembly is heavy and installation involves aligning to base rails and torquing to specification. Installation should be performed by a qualified installer unless you have prior experience with 5th wheel slider service.

Limited Lifetime Warranty

Backed by CURT's limited lifetime warranty (one-year finish, one-year parts).

Genuine CURT OEM

Key Features

• Genuine CURT OEM S25 5th Wheel Slider (25K)
• Part Number: 16574
• UPC: 612314052097
• ⭐ True rolling design — wheels bear the load, not hollow rods
• ⭐ ~12" of rearward displacement
• ⭐ Locks in both extended and retracted positions
• ⭐ Thick operating handle — smooth operation
• Gross trailer weight capacity: 25,000 lb
• Mounting: Industry-standard 5th wheel base rails
• Backed by CURT's limited lifetime warranty

Specifications

• Brand: CURT
• Part Number: 16574
• UPC: 612314052097
• Product Line: S25 Slider Series (25K)
• Type: 5th Wheel Slider (Standalone Slider)
• Gross Trailer Weight Capacity: 25,000 lb
• Displacement: ~12" (rearward)
• Rolling Design: True rolling (wheels bear load)
• Locking Positions: Extended and retracted
• Mounting: Industry-standard 5th wheel base rails
• Finish: Powder coated
• Warranty: Limited lifetime (one-year finish, one-year parts)