Stoltz Industries RP-4 Keel Roller 4 Inch Polyurethane Boat Trailer Roller

Stoltz Industries

<h3>About Stoltz Industries</h3><p>Stoltz Industries has built a reputation as one of the most trusted names in marine boat trailer accessories, specializing in high-performance polyurethane components that protect hulls and make launching or retrieving a boat significantly easier. Headquartered in the United States, Stoltz is widely recognized for engineering products that outlast conventional rubber and PVC alternatives — a distinction that has earned the brand a loyal following among boaters, marina professionals, and trailering enthusiasts alike.</p><h3>The Stoltz Super Rollers Advantage</h3><p>At the heart of the Stoltz lineup is the legendary <strong>Super Rollers</strong> family of polyurethane keel rollers and bow stops. <strong>Polyurethane</strong> is the key differentiator: it is far more cut- and abrasion-resistant than rubber or PVC, meaning Stoltz rollers resist flat-spotting after months of storage, won't crack in extreme cold, and leave <strong>no marks or stains</strong> on a boat's hull or gel coat. Stoltz rollers also feature aluminum inner sleeves for optimal load-bearing performance and extended service life, making them a genuinely economical long-term investment despite a higher initial cost than budget alternatives.</p><p>Boat trailers frequently ship from the factory with inadequate roller support. Many boat manufacturers themselves recommend upgrading to proper roller systems to protect the keel and transom during transport. Stoltz rollers address this directly: they improve keel and transom support, allow easier launching and retrieval without fully submerging the trailer, and keep the tow vehicle safely away from slippery ramp surfaces.</p><h3>Complete Boat Trailer Parts Coverage</h3><p>Beyond keel rollers, Stoltz Industries manufactures a comprehensive range of boat trailer components. <strong>Bow stops and bow rollers</strong> — available in 3&quot;, 3.5&quot;, 4&quot;, and larger configurations — guide the boat bow accurately onto the winch post and prevent hull-to-metal contact during trailering. The <strong>Ultimate Bow Stop</strong> series takes this further by pairing a center roller with large end bells that guide the bow to center automatically, even on V-hull and flat-hull vessels.</p><p><strong>Roller end caps</strong> secure rollers on the shaft and round out a complete trailer roller assembly. Stoltz also produces <strong>trailer frame pads and skid pads</strong> — cross-member protectors in various dimensions that cushion the hull where it rests on the trailer frame, providing an additional layer of protection against abrasion during transport and storage.</p><h3>Made in the USA, Built for the Long Haul</h3><p>Stoltz Industries products are proudly American-made, a point of distinction that resonates with boaters who demand consistent quality and accountability. The brand's focus is narrow but deep: every product in the Stoltz catalog is engineered specifically for the demands of marine trailering, from freshwater lakes to saltwater coastlines. It is that singular focus — and the superior material science behind polyurethane construction — that has made Stoltz rollers and keel pads a go-to upgrade for boaters who want parts they may never need to replace again.</p>