Factory Connection ANB-0049 Shock Spring 4.9 kg/mm for Dirt Bikes

The Factory Connection ANB-0049 is a precision-engineered rear shock spring rated at 4.9 kg/mm (approximately 274 lb/in), designed for motocross and off-road dirt bike riders seeking superior suspension performance and durability over stock components.

Factory Connection engineers and manufactures their own spring designs to industry-leading standards. Each spring is cold-wound on precision CNC equipment using the highest tensile strength commercial-grade silicone spring wire, then heat-tempered, shot-peened, and end-ground to maximize spring stress resistance and long-term longevity.

Key Features:

• Spring Rate: 4.9 kg/mm (274 lb/in)
• Cold-wound on precision CNC equipment for consistent, accurate spring rates
• Heat-tempered, shot-peened, and end-ground for enhanced durability and stress resistance
• Pre-set for fatigue resistance
• Manufactured from highest tensile strength commercial-grade silicone spring wire
• Tested to 500,000 cycles — exceeding the OEM industry standard of 200,000 cycles
• Passes a rigorous 11-category Quality Assurance inspection before approval for sale
• Precision fitment to shock body for optimal performance
• Made in the USA
• Backed by Factory Connection's Lifetime Guarantee

Factory Connection shock springs are regularly reviewed, tested, and redesigned to ensure the best fitment, stress levels, and overall quality. Whether you're a weekend trail rider or a competitive racer, the ANB-0049 delivers consistent, reliable suspension performance that outlasts OEM springs.