JCO4157-02 JConcepts Boss 1.9" 1.9" All Terrain Comp Rock Crawler Tires (2) (4.25” OD) (Green) | The RC Shop at Dr Dans

Dominate the rocks with the JConcepts Boss 1.9" All Terrain Comp Rock Crawler Tires. Featuring a unique flexible block and bar tread design, narrow competition carcass, and high-conformity construction, these tires deliver powerful grip, stability, and control for serious 1.9” Sporty Mini competitors.

About the Boss Comp Tires

Aggressive Comp Style Tread

The Boss 1.9" All Terrain Comp Rock Crawler Tires feature an original JConcepts tread pattern designed to dominate the 1.9” Sporty Mini competition class. Built with a narrow 1.38” carcass and 4.25” overall diameter, these tires deliver excellent ground clearance and focused pressure for strong traction. The unique block and bar tread layout with horizontal and vertical flexible elements allows the tire to grab, hold, and conform to a variety of terrain while maintaining sideload stability. A continuous carcass with minimal lettering supports smooth slide and grind performance, while React open cell inserts provide balanced support and consistent crawling control.

Features:

• Continuous thickness carcass for a clean, uniform profile
• Fits industry-standard 1.9” diameter wheels
• Original pin-bar tread design for strong traction
• Designed for 1.9” Sporty Mini competition wheels
• 4.25” diameter provides lower center of gravity
• Narrow 1.38” carcass improves pressure and grip
• Large center lugs help start traction quickly
• Horizontal and vertical traction bars add stability
• Dense sidewall ribs improve anti-slip performance