MRP Progressive Rear Shock Coil Spring 129mm Long 65mm Maximum Stroke 450+ Pound Spring Weight MPFN-BB MR 17286 LLU MAX-BAG 5 Thread Length (mm) 9

5 Thread Length (mm) 9 Axle Diameter (mm) 15 Overall Length (mm) 198 Weight 78

Flange No Color Black Length 165 Defined Color Black Grip Shift Specific No Shape Round Lock On No

Surly track cogs are threaded the same as a BMX freewheel (1

}Wolf Tooth Single Speed Aluminum Cog: 16T Compatible with 3/32" Chains

MRP Progressive Rear Shock Coil Spring 129mm Long 65mm Maximum Stroke 450+ Pound Spring Weight MPFN-BB MR 17286 LLU MAX-BAG 5 Thread Length (mm) 9MRP Progressive Rear Shock Coil Spring 129mm Long 65mm Maximum Stroke 450+ Pound Spring Weight. Progressive Springs utilize a non linear design intended for trail and all mountain enduro riding. They are designed to increase in rate late into stroke to provide additional bottom out support and open up the use of coil shocks on frames previously only suited to air shocks. TECH SPECS Spring Weight 450+