The Multiquip 11991-1 Trowel Blade Arm Sth 22-1/2 Silver is a genuine OEM component designed for STXD6i and STX6H hydrostatic ride-on power trowels. As a direct factory replacement, this arm is engineered to match the original geometry and material specifications of the unit it replaces, ensuring correct blade pitch response and consistent surface finishing performance. Confirm your model code against the STXD6i and STX6H fitment before ordering to ensure a correct match.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original specifications, delivering the structural integrity and dimensional accuracy that blade arm function demands.
- Direct-Fit Replacement — Engineered to bolt into the existing blade spider assembly on compatible machines without alteration to mounting hardware or blade attachment points.
- Compatible with STXD6i and STX6H — Verified fitment for Whiteman super-sized hydrostatic ride-on power trowels in the STX series.
- 22-1/2" Arm Length Accuracy — The precise arm length maintains correct blade sweep radius, which directly affects the consistency of the finished concrete surface across the full trowel head.
- Operational Safety Relevance — A bent, cracked, or worn blade arm can cause uneven blade loading and loss of trowel head balance at operating speed — replacing with a genuine part restores safe, controlled operation.
The trowel blade arm is the structural link between the spider hub and the finishing blade on a ride-on power trowel. It holds each blade at the correct angle and distance from the center of rotation, allowing the pitch adjustment mechanism to respond accurately as the operator changes finishing pressure. When a blade arm is bent or worn, blades no longer sit at the correct sweep radius or angle, resulting in uneven concrete finishing, increased vibration, and accelerated wear on surrounding components.
Part Details
| Part Number | 11991-1 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Trowel Blade Arm Sth 22-1/2 Silver |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXD6i |
| Whiteman Ride-On Power Trowels | STX6H |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
