Bilstein Shock Numbers Explained Everybody Read! - Ranger-Forums - The Ultimate Ford Ranger Resource

Suspension Tech General discussion of suspension for the Ford Ranger.

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Old 10-12-2004
rngprerunner's Avatar
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Since this question comes up so often it has been explained in a way that is easy for everybody to understand. This should clear up all questions about what is right for your application.

Thanks to Bonzen of Dezert Rangers for explaining the numbers.
For those that dont know, Bonzen works for Bilstein. This list can be found at

"Alot of people are confuzed as to the different series of shocks we produce. Here are the definitions explained:

OEM Heavy Duty (HD) series - Bolt in, 2" diameter, yellow in color, stock style replacement shocks.

5100 series - Bolt in, 2" diameter, silver zinc plated, stock replacement for a LIFTED truck only. Application specific to each truck.

5125 series - Non application specific, 2" diameter, eye to eye only mount type, silver zinc plated. Comes in 6.5" 6.65" 8" 8.5" 9" 10" 11" 12" 14" travel. Same exact shock as a 5100.

5150 series - Non application specific, 2" diameter with a fixed piggyback reservoir, eye to eye only mount type, silver powdercoat finish. Comes in 6.5" 8.5" 10" 11" 12" 14" travel.

6100 series - 2" diameter, could be yellow or nickle plated depending on application. These are mostly for buggies or short travel sand rails. Non reservoir, non schrader valve shocks. All ends are 1/2" graphite heims. Travel lengths in 8" 10" 12" 14". COILOVER lengths in 5" 6" 8" 10".

7100 series - Nickel Plated, 2" diameter USER REBUILDABLE schrader and reservoir shocks. All ends are 1/2" teflon aurora uniballs. Travel lengths of 8" 10" 12" 14". Also valved specific for class 11 and 9 cars with a 5.36", 6.65" and 10.26" travel.

9100 series - 2" and 2.5" pure race shocks. The only shocks we make with a 22mm shaft, (7/8") USER REBUILDABLE. Nickle plating, 15" long 1.5" diameter reservoir, even on the 2" body 9100's. Comes in smooth body, coilover, and 1,2,3,4,5 tube bypass. 2" diameter shocks only with 1,2,3 tube bypass. This is the shock that all protrucks run. Travel lengths in 10" 12" 14" 17". We are working on an 8". Also you can order these shocks with a screw top (black anodized 7075 aluminum) or a fusion welded top that makes the overall length of the shock about 2" shorter. All Protrucks use weld tops. Weld tops do take longer to make though. There is no performance, price, or travel differences between the screw tops and weld tops. It is 100% personal preferance and sometimes dependant on space restrictions which would neccessitate the use of a weld top because like I said, it's shorter overall.

9300 "Blackhawk" - 3" INTERNAL diameter, 4 tube bypass extruded aluminum, hard anodized inside and outside. NO welds on this shock. 1/1/8" shaft. Shock runs around 100 degrees cooler then a steel body 3" or 4" shock, and the 18" stroke blackhawk fully filled with oil weighs only 37 pounds. Too much tech to list, but MSRP is $2195 each. What they will sell for from shops and retail stores is up in the air right now, but most likely not that expensive.
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Old 10-12-2004
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do you smell that? oh yeah smells like a sticky to me.... HINT HINT MODS
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Old 10-12-2004
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very helpful... thanks man
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Old 10-12-2004
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Originally Posted by PickupMan92
do you smell that? oh yeah smells like a sticky to me.... HINT HINT MODS

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