Looking For 4 on 4 Hubs For Older Trailer With Short Spindles

Updated 12/15/2025 | Published 10/31/2024

Products Featured in This Question

Grease Cap, 1.988" OD Drive In - Qty 2

(2186)

$6.81

Trailer Idler Hub Assembly for 2,000-lb Axles - 4 on 4 - Galvanized

(537)

$39.43

BT8 Spindle for 2,000-lb Trailer Axles - 1-1/4" Diameter

(73)

$34.56

Question:

Have a 4 bolt 4inch hub on a 1inch spindle but only 3inch of spindle length from seal shoulder to 1/2inch threaded necked down shoulder for castle nut please help. Need 4 hubs. Older trailer. Rob D

asked by: Rob D

short trailer spindle
(click to enlarge)

Expert Reply:

Hello Rob, thanks for reaching out. We do offer some 4 on 4 hubs that will fit a 1" spindle, but we do not have anything for a short spindle like you described. A lot of older trailers used shorter spindles, and this design is not obsolete.

The only solution for this will be to replace the spindles with the BT8 Spindle for 2,000-lb Trailer Axles # TRU94FR. This is a 1" straight spindle and it is the standard length. You can use that with the Trailer Idler Hub Assembly # AKIHUB-440-2-G-1K which is the 4 on 4 bolt pattern. Keep in mind that the new spindles will need to be welded on and this is best done by a professional.

expert reply by: Jesse M

Jesse M.

12/15/2025

Hey Rob, how did things go with the new BT8 spindles and 4 on 4 hubs for your older trailer? Your update could make it easier for others working with short spindles to find a good solution.