Southwest Wheel® 1.25" Round BT8 Spindle with Nut, Washer, and Cotter Pin - R104BT8X

TruRyde® 1.25" Round BT8 Spindle with Nut, Washer, and Cotter Pin - R104BT8X | Southwest Wheel®

High-quality replacement BT8 spindle designed for 3,500 lb. capacity trailer axles. This sturdy 1.25" round spindle is a direct fit for many popular boat, utility, cargo, and RV trailers.

The TruRyde® R104BT8X comes complete with the spindle nut, washer, and cotter pin — everything you need for a clean, professional installation or axle repair.

Key Features:

• Spindle Type: BT8 (standard for many 2,000 lb. axles)
• Diameter: 1.25" round stock
• Bearings: Accepts standard BT8 bearing set (L44643 inner / L44643 outer)
• Includes: Spindle nut, flat washer, and cotter pin
• Material: High-strength forged steel with precision-machined surfaces
• Finish: Corrosion-resistant zinc or black oxide coating
• Mounting: Weld-on design for easy installation on round or square axle tubing

Common Applications:

• 2,000 lb. single and tandem axle trailers
• Replacement spindles for bent or damaged axles
• New trailer builds and custom fabrications

Whether you’re repairing a damaged spindle or completing a new axle, the TruRyde® BT8 spindle delivers reliable performance and long service life at an excellent value.

Ready to get your trailer back on the road? Add the TruRyde® 1.25" BT8 Spindle Kit (R104BT8X) to your cart today!

Round Spindle BT8 Spindle. Capacity (Pair) 1,000 lbs. 1.25 in. Shank Diameter. Overall length 8.25 in. Spindle length 3.5 in.
 

Part No	Quantity	Description
R104BT8	1	1.25" Round Spindle
FA-SW100	1	1" Spindle Washer
FA-SN100	1	1"-14 N.F. Castle Nut
FA-CP175	1	Cotter Pin