C.E. Smith Boat Trailer Bunk Brackets: Bolsters & Swivel Mounts

Boat-trailer bunk supports hold the carpeted boards at the position and angle needed to support the hull. C.E. Smith offers complete swivel bolster assemblies, separate double-slot bolster supports and swivel-top fittings. A 9-inch assembly is not the same as an 8-inch bracket component, so check the entire installation before ordering.

Choose the right bunk bracket style

Complete swivel assemblies10000G, 10001G and 10002G combine a slotted bolster with a swivel top. Their published overall lengths are 9, 11 and 13 inches.
Double-slot bolster supports10100G40 and 10102G40 are listed at 8 and 12 inches, with 2¾- and 4¾-inch slots. Check the exact listing for supplied components.
Swivel-top hardware10201G40 is a 3½-inch swivel bracket with 2-inch bunk-hole centres. The 10205GA is a separate swivel bracket kit with hardware.

C.E. Smith bunk support dimensions

Compare the assembly length or bracket length, adjustment slot and mounting-hole positions for the exact MPN. These are steel bunk supports; fasteners, trailer-frame fit and the condition of the bunk boards must be checked separately.

Part number Bracket type Length Component or hole spacing Slot
10000G Swivel bolster assembly 9 in 8 in bolster 2¾ in
10001G Swivel bolster assembly 11 in 10 in bolster 3¾ in
10002G Swivel bolster assembly 13 in 12 in bolster 4¾ in
10100G40 Double-slot bolster support 8 in Bolster bracket 2¾ in
10102G40 Double-slot bolster support 12 in Bolster bracket 4¾ in
10201G40 Swivel top bracket 3½ in 2 in hole centres —
10205GA Swivel bracket kit 3½ in Bracket with hardware —
Two lengths can describe one assembly. For the 10000G, 10001G and 10002G swivel bolster assemblies, C.E. Smith gives the complete assembled length as 9, 11 and 13 inches, while the bolster components measure 8, 10 and 12 inches. Select by the complete part number and actual mounting geometry, not just one advertised measurement.

How to choose a replacement bracket

  1. Identify the existing arrangement. Is it a complete swivel assembly, a double-slot bolster component, or a swivel top that attaches to another bracket?
  2. Measure overall height and slot length. Compare both the full assembly and the underlying bolster bracket. Similar-looking brackets may have different adjustment travel.
  3. Check the trailer-frame attachment. Measure the frame member and the location of the original U-bolts or mounting hardware. Do not infer U-bolt compatibility from bracket height alone.
  4. Check the bunk-side holes. The exact spacing on the swivel top matters. The 10201G40 has 2-inch bunk flange hole centres; do not substitute a different pattern without checking it.
  5. Confirm what is included. A full swivel assembly, individual support and bracket kit may have different supplied hardware. Read the exact listing before purchasing.
  6. Set up the whole bunk support system. Support the boat safely while working; use the trailer manufacturer's positioning and fastening instructions. Do not rely on a single bracket measurement to establish load capacity.

Find the exact C.E. Smith parts

Use the cards below to open matching manufacturer part numbers in the NewRVParts catalog. Products ship from supplier warehouses; in-person warehouse viewing and pickup are not offered.

Related boat-trailer support parts

Updating the bunk boards as well as the supports? See our boat trailer bunk carpet sizes and carpeted bunk guide-ons. These are different parts of the trailer's bunk and loading system.

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