Triumph NT-WA66C 6,600 lb Wheel Support Adapters (Set of 4)

What wheel support adapters change

A standard two-post lift picks a vehicle up at frame contact points. On some vehicles that is not practical — recreational vehicles and turf equipment are the examples the manufacturer lists — because a frame pad will not reach the lift point or will not seat cleanly against it. The NT-WA66C adapters convert the arms to a wheel-cradle setup: each adapter seats over a lift arm and supports the vehicle under its tire instead. The set of four carries 6,600 lb of total capacity when all four adapters are in use, so it is the four adapters together, not each one, that define what you can lift. Note that this figure is the adapters' rating and is separate from the rating of the lift itself.

Fitment: pin diameter and arm thickness

Fitment is decided by two dimensions on your lift arms. The adapter mounting pin is 34.2 mm (1.35 in.) in diameter, and the manufacturer listing states the adapters fit lift arm holes 1.33–1.5 inches in diameter and arm thickness up to 1 inch. Sources differ on Triumph model coverage: the manufacturer listing states the adapters fit current Triumph 9,000 lb., 10,000 lb. and 11,000 lb. two-post lifts, while the dealer listing states all Triumph two-post lifts up to 13,000 lb. Fit on other brands depends on arm thickness and arm pin-hole diameter. If you already own the lift, the manufacturer's instruction is direct: measure your arm hole diameter and arm thickness before buying rather than assuming compatibility by brand or capacity class.

Width positions and drive-through clearance

The support arms adjust to three width positions, so you can set the cradle to match the wheel and track you are lifting. Two of the three are documented: a narrower position at 13.5 in. between the supports and 19 in. across the base, and a wider position at 17 in. between the supports and 22.5 in. across the base. Both arms on each adapter swing outward 90 degrees. That matters for shop flow — with the arms swung out, the floor path is clear and the vehicle can drive straight through once it is back on the ground, rather than requiring you to remove the adapters first. Set the width before the vehicle is on the cradles, not after.

What ships and what to confirm first

The NT-WA66C is sold as a set of four adapters. The dealer listing states the set ships from a US warehouse in Texas; the manufacturer listing states the price includes free shipping in the lower 48 USA. Manuals and technical documents are not published on the product page — they are available on request from the seller. Before ordering, confirm three things against your own lift: the arm pin-hole diameter falls in the 1.33–1.5 in. range, the arm thickness is 1 in. or less, and the 6,600 lb total capacity of the four adapters covers what you intend to lift. No installation is required beyond seating each adapter on an arm and inserting the mounting pin.

Key features

• Swing-out drive-through — both arms on each adapter swing out 90 degrees to clear a floor path for the vehicle.
• Three-position width adjustment — set the cradle width to match the wheel and track being lifted.
• 6,600 lb total capacity — rated for the set of four adapters used together.
• Pin-indexed mounting — a 34.2 mm (1.35 in.) mounting pin indexes into the lift arm's existing pin hole.
• Documented width settings — 13.5 in. between supports (19 in. across the base) and 17 in. between supports (22.5 in. across the base).
• Wheel-contact lifting — supports vehicles that a standard frame pad will not reach or seat cleanly against, including recreational vehicles and turf equipment.
• Cross-brand fit potential — fits other brands depending on arm thickness and arm pin-hole diameter.