T-H Marine CMC Transom Wedges 20122, 2 Degree Set Back Spacer Kit for Power-Lift Transom Brackets
T-H Marine CMC Transom Wedges 20122, 2 Degree Set Back Spacer Kit for Power-Lift Transom Brackets
The T-H Marine CMC Transom Wedges (part number 20122) are 2 degree wedges built to add extra positive or negative trim to your boat's transom. They serve as an aid for boats with an insufficient transom angle, or for boats experiencing planing problems at low speed, helping the hull find plane more efficiently. Beyond their primary role as trim wedges, the design allows the same set to double as set back spacers simply by inverting the 2, 4, and 6 wedge sets, giving you added mounting flexibility without buying a separate part. The hole pattern is drilled to match the Power-Lift transom bracket and standard motor mounting pattern, so the wedges install using the existing bolt holes without additional drilling. Each wedge measures 1/2 inch x 4 inch x 11 1/4 inch, and the set is finished in an off-white color. This is a practical, purpose-built solution for boaters looking to correct trim geometry or reposition their motor mount without replacing the transom bracket itself.
Specifications
- Brand: T-H Marine CMC
- Manufacturer Part Number: 20122
- Wedge Angle: 2 Degrees
- Application: Trim Wedge or Set Back Spacer (invert 2, 4, and 6 wedge sets to convert)
- Hole Pattern: Matches Power-Lift transom bracket and standard motor mounting
- Product Dimensions (per wedge): 1/2 inch x 4 inch x 11 1/4 inch
- Package Dimensions: 12 inches x 4.9 inches x 1.2 inches
- Color: Off-white
- Weight: 3 pounds
Fitment
Designed to fit the same hole pattern as the Power-Lift transom bracket and standard motor mounting setups.
Replaces (OEM)
No OEM cross-reference numbers are listed for this part.
Frequently Asked Questions
What do the T-H Marine CMC Transom Wedges (20122) do? They are 2 degree wedges that add extra positive or negative trim to a boat's transom, used to correct an insufficient transom angle or to help a boat that has planing problems at low speed.
Can these wedges be used as set back spacers instead of trim wedges? Yes, the 20122 wedge set is designed so you can invert the 2, 4, and 6 wedge sets and use the same kit as set back spacers rather than trim wedges.
What is the hole pattern on the CMC transom wedges? The hole pattern on part number 20122 matches the Power-Lift transom bracket and standard motor mounting pattern, so it lines up with existing mounting holes.
How big is each transom wedge? Each wedge in the 20122 set measures 1/2 inch x 4 inch x 11 1/4 inch.
What color are the T-H Marine CMC transom wedges? The 20122 transom wedge set has an off-white finish.
How much does the transom wedge set weigh? The T-H Marine CMC Transom Wedges, part number 20122, weigh 3 pounds.
Will these wedges fix a boat that won't get on plane at low speed? The 2 degree angle on the 20122 transom wedges is specifically intended to help boats with planing problems at low speed or an insufficient transom angle.
Do I need to drill new holes to install the CMC transom wedges? No, since the 20122 wedge set uses the same hole pattern as the Power-Lift transom bracket and standard motor mounting, it installs using the existing mounting holes.
Are there OEM cross-reference numbers for part 20122? No OEM replacement or cross-reference numbers are listed for the T-H Marine CMC Transom Wedges, part number 20122.
How is this different from the CMC 5 Inch Motor Mount Vertical Extension? The 20122 transom wedges adjust trim angle or set back position using shims at the existing mounting holes, while the CMC 5 Inch Motor Mount Vertical Extension is a separate bracket component that raises the motor up to 5 inches higher than standard transom mounting.