CURT adjustable coupler channel 5-position – one-piece steel, 12,000 lb towing, raw finish

CURT 48650 is a one-piece steel adjustable coupler channel that accepts CURT lunette rings and channel-style couplers and offers five height positions for heavy-duty towing up to 12,000 lbs.

When hauling in construction, agriculture or other demanding settings, a robust, simple coupling system matters. The CURT 48650 channel provides a solid mounting point for lunette rings or channel-style couplers, combining formed-steel strength with vertical adjustability so you can level trailers or match hitch heights without complex modifications.

How does this channel make heavy towing more reliable?

The 48650 uses thick, formed steel in a single-piece construction to resist flexing under load and concentrate forces through the plate instead of fasteners alone. Its simple hook-and-loop style compatibility and welded or boltable mounting options minimize weak links in the towing assembly.

• One-piece formed steel body for increased rigidity and durability
• Rated gross trailer weight: 12,000 lbs (follow lowest component rating)
• Back holes allow bolt-on installation; raw finish accommodates welding

Which lunette rings and couplers fit this channel?

This coupler channel is sized to accept CURT channel-style lunette rings and couplers with a 3-inch inside width and 2-inch on-center bolt pattern. It’s compatible with CURT part numbers intended for channel mounts, letting you pair the channel with the coupling hardware that matches your trailer setup.

• Designed for CURT lunette rings #48600, #48601, #48660
• Accepts channel-style couplers #25319, #25329, #25330, #25328
• Bolting hardware sold separately (bolt kit #48620 recommended)

How do the five adjustment positions and overall height help with leveling?

The channel offers five vertical positions across an 11-3/4" overall height, so you can fine-tune the coupling point to match your tow vehicle or trailer geometry. Adjustments are straightforward: align the preferred hole set, secure the lunette or coupler, and verify tongue angle for safe towing.

• Five distinct height settings for precise trailer leveling
• 11-3/4" overall channel height to accommodate common hitch heights
• Easy vertical repositioning eliminates the need for shims or spacers

Can I weld this channel or use it as a bolt-on part?

The 48650 ships in a raw steel finish so you can weld it into place and paint or coat as you prefer, or use the pre-drilled holes in the back for a bolt-on installation when welding isn’t an option. Choose the mounting style that best suits your trailer fabrication and serviceability needs.

• Raw steel finish for straightforward welding and custom coating
• Back holes provide a bolt-on alternative for easier removal or replacement
• Hardware not included—select appropriate bolts or use bolt kit #48620

Who is this for: The CURT 48650 coupler channel is built for fleet operators, contractors, farmers and anyone who depends on heavy-duty pintle-style towing. If you need a rugged, adjustable mounting point for lunette rings or channel couplers—one that tolerates tough environments, allows height changes, and supports high gross trailer weights—this channel is a practical component for rugged trailers and equipment haulers.