Bob Harris Enterprises: 515-292-9200  •  2316 230th St. Suite 202  •  Ames, IA 50014

CSI Shocks

RS-M-90

Monotube Non Adjustable

The much anticipated release of our Dirt Modified shocks is here!  We approached the dirt modified market with the same passion and intensity that has won us championships and races worldwide with sprint cars and midgets.  The M-90 shock features a precision machined steel body with enlarged gas chamber for minimal gas pressure gain throughout the range of travel.  Every M-90 is built with a tuned basevavle assembly, allowing us to run lower gas pressures an increase grip in the slickest of track conditions.  We have several billet aluminum piston designs to meet every driver and chassis combination’s needs.  The M-90 can be run with or without a Schrader Valve, and is available in 7 and 9” strokes.  As always each shock we build is backed by our industry leading customer support.

Body: Machined Steel

Shaft: Machined Steel, Hardened, Ground and CSI "Gold" Coated

Piston: CSI Quad Port / CSI Enhanced Flow

Basevalve: Tuned Basevalve Assembly

Eyelet: Steel with Premium Spherical Bearing

RS-M-80

Non Basevalve Monotube Non Adjustable

The cost effective alternative for our dirt modified program is here.  Our passion and attention to detail is displayed again in the all new RS-M80 shock.  The M-80 was designed to conform to the rules in spec, sport and B Mod divisions.  The shock features a precision machined steel body available with our without a Schrader valve.  Each M-80 is built one at a time to the specific needs of its intended user.  The same billet piston options available for our M-90 shock are also available in the M-80.  The M80 is available in 7 and 9” strokes.  As always each shock we build is backed by our industry leading customer support.

Body: Machined Steel

Shaft: Machined Steel, Hardened, Ground and CSI "Gold" Coated

Piston: CSI Quad Port / CSI Enhanced Flow

Eyelet: Steel with Premium Spherical Bearing