Ultimate Support Ult-8099 Speaker Stand Handknob Replacement

Name: Ultimate Support Ult-8099 Speaker Stand Handknob Replacement
Brand: Ultimate Support
SKU: Ult-8099

★★★★★3.9 (7 reviews)

Keep your speaker stands locked solid mid-show — the Ultimate Support ZKB137 handknob replacement restores full height-locking function to TS and LT series stands.

$8.00*

✓ In Stock on Amazon.com

View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Ultimate Support ULT-8099 (ZKB137) is a direct replacement handknob for the locking collar on select Ultimate Support speaker and light stands. On the TS-30, TS-33, LT-88B, LT-99B, and LT-99BL stands, the handknob is the primary mechanism for locking the stand at a set height. When it strips, cracks, or goes missing on the road, the stand becomes unable to hold position under load — a safety and operational problem. This part restores that function with an OEM-spec 1.37" (35mm) shaft that engages the collar threads at the correct depth for full clamping force.

Installation requires no tools and takes under two minutes — the knob simply threads onto the existing shaft. From a build quality standpoint, this is a small-run replacement hardware part, not a performance upgrade. Its value is purely functional: it puts a broken stand back into working condition at a fraction of the cost of a replacement stand. For touring engineers and venue technicians who carry these stands regularly, keeping one or two of these in a spares kit alongside gaffer tape and spare cables is standard road-smart practice.

Key Features

1.37" (35mm) long shaft

For use with Ultimate Support TS-30, TS-33, LT-88B, LT-99B and LT-99BL stands

Specifications

Model

ULT-8099 (ZKB137)

Shaft Length

1.37 inches (35mm)

Compatible Stands

Ultimate Support TS-30, TS-33, LT-88B, LT-99B, LT-99BL

Installation

Tool-free threaded installation

Pros & Cons

👍 Pros

Exact OEM-spec replacement — 1.37" shaft length matches the original geometry for proper thread engagement and full locking force.
Threads on without tools, making it a fast field repair during a show changeover or before a gig.
Restores the stand to full mechanical function rather than requiring complete stand replacement.
Compatible across five Ultimate Support stand models, making it a useful spare part to keep in a road case.

👎 Cons

Compatibility is limited to five specific Ultimate Support stand models — it will not fit other brands or non-listed Ultimate Support models.
A single handknob; if both locking points on a stand are stripped, two units are required.
No color or finish options — must match the existing stand hardware aesthetics.
Not a structural upgrade — if the stand's locking collar tube itself is damaged, replacing the knob alone will not restore function.

Frequently Asked Questions

Which specific stands is this handknob compatible with?

This replacement fits the Ultimate Support TS-30, TS-33, LT-88B, LT-99B, and LT-99BL stands. Verify your stand model before ordering — the shaft diameter and thread pitch are specific to these models and may not match other Ultimate Support stands outside this list.

How difficult is it to swap in this replacement knob?

Straightforward. The handknob threads onto the existing shaft on the stand's locking collar — no tools required for installation. The process takes under two minutes if the old knob has fully stripped or broken free.

What does the 1.37" shaft length affect?

The shaft length determines how much thread engagement you get when tightening the collar. The 35mm shaft on this knob matches the original part geometry, ensuring the locking collar clamps down with the same clamping force as the factory knob.

Can I use any generic handknob as a replacement?

Not reliably. Thread pitch and shaft diameter are specific to these stands. A generic knob that looks similar may not engage the threads properly, leading to incomplete locking or cross-threading that damages the stand's collar.