Carlstar 339951 9x3.50-4 Reliance Smooth Flat-Free Caster Tire & Wheel Assembly SCAG Orange

The Carlstar 339951 is a 9x3.50-4 Reliance Smooth flat-free caster tire and wheel assembly designed for commercial turf equipment and professional zero-turn mowers. Featuring semi-pneumatic technology, this airless assembly eliminates the risk of flat tires entirely, ensuring zero downtime during operation.

The smooth tread profile is specifically engineered for front swivel caster positions on professional ZTR mowers. Tapered tread edges facilitate easy swivel action while protecting turf and grass surfaces from damage. The hub is finished in SCAG Orange, making this a direct-fit replacement for compatible SCAG and Bobcat commercial mowers.

Key Features:

• Flat-free semi-pneumatic construction — no air required, no flats possible
• Smooth tread design — turf-friendly profile prevents grass and lawn damage
• SCAG Orange hub — color-matched for compatible SCAG commercial mowers
• 5/8" roller bearings included in the assembly
• 4" centered hub with 4x2.25 wheel size
• 9" overall diameter, 3.2" width
• 260 lb. maximum load capacity at 10 MPH
• Solid/tubeless construction for long-lasting, maintenance-free performance

Compatible OEM cross-reference part numbers include SCAG 483047, 48006-1 and Bobcat 38510, 483800, 603925, 903927, 603971, 603927, and 38264. Formerly manufactured under the Carlisle brand name; Carlstar is the successor brand.