Timbren SES Helper Spring Kit Stock Height Front - Rubber - GM Fullsize Truck 2007-12 HSXSC11SASM61 Comes with 1/8"

Comes with 1/8"

Type M Low Profile Sandwich Adapter with 20 x 1

10" Converter

NOTE: Image is for reference only and shows model FB108

many engine builders actually modify the distributor's reluctor to obtain different timing for each specific cylinder

Timbren SES Helper Spring Kit Stock Height Front - Rubber - GM Fullsize Truck 2007-12 HSXSC11SASM61 Comes with 1/8"Product Description: Helper Spring Kit SES Stock Height Hardware Included Front Rubber Black GM Fullsize Truck 2007 15 Timbren was founded in 1965 to advance the ride quality of trucks while towing. Today they manufacture suspension enhancement systems for towing, rubber helper springs, and full trailer suspensions designed for both on and off road uses.