Sprindex Adjustable Rate Coil Spring 75x162mm - 510-570lbs MPFN-11.4118.091.802 Flip flop design allows unit

Flip flop design allows unit to be mounted to either the left or right side

compatible with BBs that use two external cups

}Surly Track Cog 3/32'' X 18t Silver

0mm width 42cm drop 160mm reach 92mm material aluminum color silver

Sprindex Adjustable Rate Coil Spring 75x162mm - 510-570lbs MPFN-11.4118.091.802 Flip flop design allows unitSprindex Adjustable Weight Rear Coil Spring DH 510 570 lbs 75mm 3" Stroke. Adjustable spring rate coil that's also progressive. Sprindex is specifically designed to have a progressive spring rate for the last 20% of stroke for big hit support and for bikes with a linear linkage design. Adjustable spring rate Adapters included for different size shocks and set ups Made of super high tensile spring steel TECH SPECS Spring Weight 510 570 Material Steel