James Duff - The Early Ford Bronco, Bronco II & Ford Ranger Parts and Accessories Specialist
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Shocks, Coils, Suspension FAQ & Tires Size Guide

Auto Adjust Shock70/30 Auto Adjust Shocks
We've designed suspension systems for Fords for years, looking to fine tune them even further, we custom designed our own automatically adjusting shocks.

  • 10 Stage Auto Speed Adjusting
  • 30% Compression, 70% Rebound
  • Multi Viscosity, All Weather Fluid
  • Internal Urethane Bumpstop
  • 1 3/8" High Temperature Iron Piston
  • 5/8" Hardened, Chromed Piston Rod
  • Double Welded Ends
  • Twin Tube Construction
  • Foam Cell in a 2 3/8" Reserve Tube
  • Corrosion Resistant Baked White Finish
  • Blue Polyurethane End Bushings & Boot



SPRINGS COMPRESS... SHOCKS CONTROL REBOUND!
Our shocks are valved 70% rebound, 30% compression, letting the springs do their job, control compression. Our shocks smooth out the ride by controlling rebound. The combination of 10 stage auto speed adjusting valves with the all weather, multi viscosity fluid enables these shocks to maintain the consistent performance level we demand for on and off-road driving.

Conventional 50/50 valved shocks use equal pressure for both directions. This creates a choppy ride, caused by overheated shocks trying to control compression.

High quality construction, built to last. Limited lifetime warranty to original purchaser. TO ORDER SHOCKS, please specify make, model & year of vehicle and how much lift, if any. Also, state shock locations desired. We will assist you in ordering the correct shocks for your vehicle. #8108 and up $36.00 , Shock Boot w/Shock, $2.00,Shock Boots Alone, $4.50


What are the advantages of changing my suspension?
Stock suspensions were designed primarily for improved road use and safety with little consideration for true off-roading. We know that our customers are outdoor adventurers who travel the back roads and beyond. We consider this type of use and on-road safety when designing our suspensions.
A suspension lift raises the frame and body from the differentials and wheels, allowing the use of larger tires which increases the ground clearance under the axles in order to clear trail obstacles. Attention to wheel travel and overall ride quality is an important consideration in the design of our suspension lifts. The improved traction and wheel travel directly translates into how well a vehicle will traverse any terrain. A vehicle properly equipped for off-road use causes less damage to our trails.
Detail 8114 Shock


Why Progressive Rate Coil Springs?
A performance oriented suspension and a smooth ride-our progressive rate coils offer the best of both worlds. Our progressive coil as opposed to a stock single rate coil; the rate gradually increases as the coil compresses. The upper wraps are softer for a more comfortable street ride; the middle rates are a bit firmer to handle bumps and dips without jarring; and the last few wraps are a higher rate so that they control the up travel to prevent bottoming out.
Since coils have a softer initial rate they also will deliver more suspension travel than a single rate coil. The softer rate allows the tires to stay on the ground; providing better traction and handling. The progressive nature of the spring also allows for better and more predictable handling by helping keep the vehicle flatter in the corners and limiting body lean.


Tire Guide for 4wd Bronco II & Ranger

Bronco II & 83-92 Ranger Tire Flares/Trim
2.5 -3"Suspension 31"x10.5" 32"x11.5" Not Required
Flares/May NeedTrimming
2.5-3" Suspension +2"body 32"x11.5" 33"x12.5" Not Required
Flares/May Need Trimming
93-97 Ranger Tire Flares/Trim
2.5 -3" Suspension 32"x11.5" Not Required
2.5-3" Suspension
+2-3"body lift
33"x12.5" Flares/May Need Trimming

Notes: Tire size can vary depending on wheel offset, wheel width and tire tread design. These sizes are based on a 15x8 wheel with 3.5" backspace. These tire sizes are a general guide line because a wider tire or offset rim can cause interference with the sheet metal. A large lugged mud tire will also require more clearance or a shorter overall height in order to clear compared to an All-Terrain tread style. A 2" body lift will generally allow a 1.5" to 2" taller and wider tire to be used. For even more clearance, fender flares can be added and the sheet metal trimmed to clear the tires. Keep in mind that installing taller tires may require a ring and pinion gear change or the addition of performance add-ons for the engine or both modifications. On models up to 1989 we highly recommend upgrading to stronger later model axles when more horsepower and bigger tires are combined. Larger tires will also affect the ratio that the speedometer reads and thereby may show a slower speed than actual speed.


Ford Bronco II and Ranger Catalog

James Duff
6609 Bronco Dr., Knoxville, TN 37921

Phone: 1-865-938-6696
7am-3pm M-F West Coast
10am-6pm M-F East Coast

Fax: 1-865-938-6746
24 Hours

Classic Ford Bronco Catalog

BRONCO II & RANGER
ONLINE CATALOG

CLASSIC BRONCO
ONLINE CATALOG

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