Head Upgrade Kit with Big Grip Head v3 for 1" Top Riser Tube - Polished
Includes:
- 1: 4-1/2" Big Grip Head v3 Casting Assembly with Ergonomic S-Handle
- 1: 1" Top Riser Stand Collar Adapter Mount
- 3: Set Screw 5/16"-18 x 1/2"
- 1: Set Screw 5/16"-18 x 1-1/4"
- 1: 1/2"-13 Stainless Steel Main Thread Spindle & Brake Gasket Assembly
The next-generation Big Grip Head v3 Retrofit Upgrade Kit converts standard 1" top riser overhead stands into heavy-duty 4-1/2" grip powerhouses. Features an oversized ergonomic S-Handle with a beefed-up neck for maximum gloved tightening leverage, 16-point Baby Pin bite (5/8") and 12-point rod bite (3/8") for zero-slip lockdown, a flush-profile Junior receiver enabling full 360° light modifier articulation, clamp-ready cheeseborough neck with a widened anti-slide base, and a 1/2"-13 stainless steel main spindle.
SKU:
KPU-HBP10-000
Head Upgrade Kit with Big Grip Head v3 for 1" Top Riser Tube - Polished
Large Ergonomic S-Handle & Reinforced Neck
With a bigger head comes a bigger handle. The beefed-up cast neck delivers immense torsional rigidity, providing the leverage and confidence required to lock down heavy overhead frames and large fixtures without wrist fatigue.
16-Point 5/8" & 12-Point 3/8" Tight-Bite Jaws
Precision-broached gripping teeth deliver 16 contact points on 5/8" Baby Pins and 12 contact points on 3/8" rods, completely eliminating rotational slip and pin gouging under high cantilever loads.
Flush 1-1/8" Junior Receiver & 360° Rotation
Machined flush to the side plates, allowing full 360-degree rotation of light modifiers and butterfly frames without catching on casting edges. Features a dual-position T-handle for all junior pin lengths.
Clamp-Ready Cheeseborough Neck
Contoured neck allows direct clamping of standard grid clamps, cheeseboroughs, or pipe hangers on the fly. The widened base flange acts as a mechanical stop to prevent axial sliding.
1/2"-13 Solid Stainless Steel Spindle
Solid stainless steel central thread eliminates corrosion, stripped studs, and galling. Paired with a CDA 360 brass friction disc and rough-cast brake gasket bedding for 150 ft-lbs locking torque.
Universal 1" Riser Retrofit Compatibility
Converts any existing 1" top riser overhead roller stand (Norms, Matthews MSE, Avenger, American) into a high-capacity v3 head in under 3 minutes with included high-tensile set screws.
Mechanical & Rigging Specifications
| Product Classification | 4-1/2" Big Grip Head v3 Retrofit Upgrade Kit |
| Primary Metallurgy | Cast 6061-T6 Aluminum / ASTM A536 Ductile Iron / ASTM A513 DOM Steel |
| Central Spindle Fastener | 1/2"-13 Solid Stainless Steel Thread (Corrosion Resistant) |
| Pin Bite Serration Contact | 16 Contact Points (5/8" Baby Pin) • 12 Contact Points (3/8" Rod) |
| Receiver Interface | 1-1/8" Junior Receiver (Flush Profile, 360° Rotation) + Dual Position T-Handle |
| Friction Brake System | CDA 360 Solid Brass Friction Disc + Rough-Cast Brake Gasket Bedding |
| Stand Column Fitment | 1" Top Riser Tube (Includes 3x 5/16"-18x1/2" & 1x 5/16"-18x1-1/4" Set Screws) |
| Clamping Holding Torque | 150 ft-lbs (203 N·m) Static Locking Torque |
NORMS STANDARD HARDWARE LIFETIME WARRANTY
Precision manufactured in Sun Valley, CA. Backed by our lifetime structural warranty against casting failure and defect.