1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Bilstein 5100/5125/5165 Split Digressive Valving?

Discussion in 'Suspension' started by Sublime, Oct 8, 2011.

  1. Oct 8, 2011 at 8:31 AM
    #1
    Sublime

    Sublime [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25918
    Messages:
    3,456
    Gender:
    Male
    First Name:
    Mike
    Phoenix, AZ
    Vehicle:
    08 TRD 4x4
    Icon/All Pro.....chopped for 35's
    Found this about 5100's being a digressive shock!
    "The shocks feature vehicle specific split digressive valving…..”

    https://www.allprooffroad.com/05tacomafrontsuspension/144

    What's the split digressive mean? (compression/rebound?)

    The 5125s just say they have deflective self adjusting valving……can anyone elaborate? That would be different than the 5100’s? I can feel a difference now that I have them on. The rear end feels a little less stable (the shock compresses easier) but my rear springs have softened up to some degree!

    https://www.allprooffroad.com/tech-info-mainmenu-63/shocksandcoilovers/bilsteinshocks

    Also, anyone running the 5165’s? These things look mean and have the stem top already. Wonder what the measurements are on the 10” travel ones and if they would work well with the 3” AllPro leafs I’ve got my eyes on!
     
  2. Oct 8, 2011 at 10:33 AM
    #2
    Norton

    Norton Well-Known Member

    Joined:
    Mar 10, 2011
    Member:
    #52729
    Messages:
    2,745
    Gender:
    Male
    First Name:
    Steve
    Monument, CO
    Vehicle:
    2013 Access Cab 4x4 V6 6MT, TRD OR & Tow Packages
    ARE Z-Series Topper, OME 885 Coils, Dakar Leafs, NitroCharger Sports; TRD Quickshifter; TRD Exhaust; aFe POWER Magnum FLOW Pro DRY S Air Filter; Goodridge SS Brake Lines; Cooper Discoverer A/T3s on FJ SE Anthracite Rims; N-Fab 6-Step Nerf Bars; MetalMiller TRD Skid; jsi's Locker Anytime & ramonortiz55's Always on Power Outlet Relay Mods; crashnburn80's Ultimate Headlight & Fog Light Upgrades (RallyLights Harnesses, Osram 85/80W H4 & Flösser 90W H11 Bulbs); ND4's Fog Light Anytime Mod; Interior & Reverse LEDs; AudioControl LC2i LOC, JL Audio XD200/2v2 Amp, Focal PS165V1 Spkrs, Sound Ordnance B-8PTD Sub, Hushmat & Foam Insulation; Ltd Auto-Dim/Compass/Temp/Backup Camera/Homelink mirror; 4Runner 4X4 & FJ Fog Light Switches; Husky Floor Liners; UltraGauge EM; Redline Tuning QuickLIFT Elite; Mobtown Offroad Locking Bed Storage Doors; Toyota Bed Mat; Toyota Bed Extender; Pop & Lock Power Tailgate Lock; SolarGard Tint; CravenSpeed Stubby Antenna; Amsoil Lubricants; Adam's Detailing Supplies
    Sub'd. :popcorn:
     
  3. Oct 9, 2011 at 11:49 AM
    #3
    Sublime

    Sublime [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25918
    Messages:
    3,456
    Gender:
    Male
    First Name:
    Mike
    Phoenix, AZ
    Vehicle:
    08 TRD 4x4
    Icon/All Pro.....chopped for 35's
    Anyone? What do u guys think?
     
  4. Nov 7, 2011 at 9:58 PM
    #4
    rzimm001

    rzimm001 Tearmytaco

    Joined:
    Mar 16, 2009
    Member:
    #14812
    Messages:
    1,023
    Gender:
    Male
    First Name:
    Bobby
    Wildomar
    Vehicle:
    08 PreRunner SR5 Long-Travel
    King 10" coilovers w/ resi. 3.5" over long travel kit. Factory spindles w/ ALLPRO gussets. Total Chaos tower gussets. Energy Poly cab mounts and steering rack mounts. Glassworks fenders and bedsides. Home fabbed bed cage. King 2.5x16 bypass shocks in the rear. DMZ long travel rear end. Race radio (2meter). Removed secondary carbon air filter. Exhaust dumped before the axle / no muffler. Phram fresh air cabin filter. K&N replacement filter, After market stereo, Grillcraft grill, custom fabled roof rack with 7" HID's, PRP race seats.
    Split digressive valving is a fancy way of saying that a digressive piston is being used and the valving is not 50/50 but actually split (usually more rebound resistance than compression). In a digressive piston design, the shocks dampening capabilities are felt more rapidly because the piston is concaved and the shims are slightly bent (preloaded) into the dish shape of the piston. The benefit to this over using just heavier grade shims is that the dampening response is felt much quicker but the max yield doesn't really change. So it's sort of a way to get more performance out of the same shock without using thicker valving shims.

    Self adjusting deflective valving is pretty much standard issue in any decently made after market shock (sway-away, fox, etc.) Not really special unless your compairing it to bone stock car shocks. It's essentially like the digressive shock described above (uses a piston with multiple shims stacked in a pyramid on both sides for dampening) only the piston is NOT digressive (concaved). This is known as linear valving. Some companies tend to use digressive valving while others use linear. Typically the digressive valving will have a firmer feel to it and is considered more advanced. Both designs have their purpose so pick your poison. Icon shocks are digressive which is why many people talk about Icons having a firmer ride than some other brands.

    Hope this helps...
     
  5. Nov 7, 2011 at 11:02 PM
    #5
    Sublime

    Sublime [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25918
    Messages:
    3,456
    Gender:
    Male
    First Name:
    Mike
    Phoenix, AZ
    Vehicle:
    08 TRD 4x4
    Icon/All Pro.....chopped for 35's
    Thanks man, good info! I realize the 5100's and 5125's all have the same valving!
     
  6. Nov 8, 2011 at 12:07 AM
    #6
    rzimm001

    rzimm001 Tearmytaco

    Joined:
    Mar 16, 2009
    Member:
    #14812
    Messages:
    1,023
    Gender:
    Male
    First Name:
    Bobby
    Wildomar
    Vehicle:
    08 PreRunner SR5 Long-Travel
    King 10" coilovers w/ resi. 3.5" over long travel kit. Factory spindles w/ ALLPRO gussets. Total Chaos tower gussets. Energy Poly cab mounts and steering rack mounts. Glassworks fenders and bedsides. Home fabbed bed cage. King 2.5x16 bypass shocks in the rear. DMZ long travel rear end. Race radio (2meter). Removed secondary carbon air filter. Exhaust dumped before the axle / no muffler. Phram fresh air cabin filter. K&N replacement filter, After market stereo, Grillcraft grill, custom fabled roof rack with 7" HID's, PRP race seats.
    I believe they are the same shock. Only difference is the external features because one is universal and the other is specific to a particular vehicle.
     
  7. Nov 8, 2011 at 7:49 PM
    #7
    Norton

    Norton Well-Known Member

    Joined:
    Mar 10, 2011
    Member:
    #52729
    Messages:
    2,745
    Gender:
    Male
    First Name:
    Steve
    Monument, CO
    Vehicle:
    2013 Access Cab 4x4 V6 6MT, TRD OR & Tow Packages
    ARE Z-Series Topper, OME 885 Coils, Dakar Leafs, NitroCharger Sports; TRD Quickshifter; TRD Exhaust; aFe POWER Magnum FLOW Pro DRY S Air Filter; Goodridge SS Brake Lines; Cooper Discoverer A/T3s on FJ SE Anthracite Rims; N-Fab 6-Step Nerf Bars; MetalMiller TRD Skid; jsi's Locker Anytime & ramonortiz55's Always on Power Outlet Relay Mods; crashnburn80's Ultimate Headlight & Fog Light Upgrades (RallyLights Harnesses, Osram 85/80W H4 & Flösser 90W H11 Bulbs); ND4's Fog Light Anytime Mod; Interior & Reverse LEDs; AudioControl LC2i LOC, JL Audio XD200/2v2 Amp, Focal PS165V1 Spkrs, Sound Ordnance B-8PTD Sub, Hushmat & Foam Insulation; Ltd Auto-Dim/Compass/Temp/Backup Camera/Homelink mirror; 4Runner 4X4 & FJ Fog Light Switches; Husky Floor Liners; UltraGauge EM; Redline Tuning QuickLIFT Elite; Mobtown Offroad Locking Bed Storage Doors; Toyota Bed Mat; Toyota Bed Extender; Pop & Lock Power Tailgate Lock; SolarGard Tint; CravenSpeed Stubby Antenna; Amsoil Lubricants; Adam's Detailing Supplies
    Thank you!
     
  8. Nov 10, 2011 at 8:36 AM
    #8
    rzimm001

    rzimm001 Tearmytaco

    Joined:
    Mar 16, 2009
    Member:
    #14812
    Messages:
    1,023
    Gender:
    Male
    First Name:
    Bobby
    Wildomar
    Vehicle:
    08 PreRunner SR5 Long-Travel
    King 10" coilovers w/ resi. 3.5" over long travel kit. Factory spindles w/ ALLPRO gussets. Total Chaos tower gussets. Energy Poly cab mounts and steering rack mounts. Glassworks fenders and bedsides. Home fabbed bed cage. King 2.5x16 bypass shocks in the rear. DMZ long travel rear end. Race radio (2meter). Removed secondary carbon air filter. Exhaust dumped before the axle / no muffler. Phram fresh air cabin filter. K&N replacement filter, After market stereo, Grillcraft grill, custom fabled roof rack with 7" HID's, PRP race seats.
    Quite welcome :)

    Bilstein must have a great marketing crew working for them. Their verbiage could sell water to a fish haha. However, I remain firmly convinced that when it comes to quality and reputation, there is none better than bilstein. Even their inexpensive shocks seem to outlast all others under hard conditions. I can't wait to see the day that Toyota comes up with an answer to the Ford Raptor. Some bilstein 2.5" coilovers that come factory would be the cat's meow. I'd be the first to buy :D
     
  9. Nov 11, 2011 at 12:32 AM
    #9
    Sublime

    Sublime [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25918
    Messages:
    3,456
    Gender:
    Male
    First Name:
    Mike
    Phoenix, AZ
    Vehicle:
    08 TRD 4x4
    Icon/All Pro.....chopped for 35's
    Hell ya......maybe a 2" over similar to AllPro and a SUA pulling 12" front and rear! Still keeping it looking stock, but able to out perform the raptor! Damn, this forum alone should give them ideas of what "should" be done to the tacoma!

    PS - 4.10 gears in all models too! Lol
     
  10. Nov 11, 2011 at 8:23 AM
    #10
    rzimm001

    rzimm001 Tearmytaco

    Joined:
    Mar 16, 2009
    Member:
    #14812
    Messages:
    1,023
    Gender:
    Male
    First Name:
    Bobby
    Wildomar
    Vehicle:
    08 PreRunner SR5 Long-Travel
    King 10" coilovers w/ resi. 3.5" over long travel kit. Factory spindles w/ ALLPRO gussets. Total Chaos tower gussets. Energy Poly cab mounts and steering rack mounts. Glassworks fenders and bedsides. Home fabbed bed cage. King 2.5x16 bypass shocks in the rear. DMZ long travel rear end. Race radio (2meter). Removed secondary carbon air filter. Exhaust dumped before the axle / no muffler. Phram fresh air cabin filter. K&N replacement filter, After market stereo, Grillcraft grill, custom fabled roof rack with 7" HID's, PRP race seats.

    Mmmmm :drool::drool:

    Hey! don't tease me like that :p

    The 4.10 gears would just be icing on the cake. Man Toyota needs to quit screwing around with that Baja edition and just go all out.
     
  11. Nov 11, 2011 at 4:49 PM
    #11
    Sublime

    Sublime [OP] Well-Known Member

    Joined:
    Nov 14, 2009
    Member:
    #25918
    Messages:
    3,456
    Gender:
    Male
    First Name:
    Mike
    Phoenix, AZ
    Vehicle:
    08 TRD 4x4
    Icon/All Pro.....chopped for 35's
    Dude, just noticed your sig says you have a DMZ bedcage and 14" smoothbody's with an aal? Did you relocte your shock mounts? I want more info....and pics lol!
     
  12. Nov 11, 2011 at 4:52 PM
    #12
    rzimm001

    rzimm001 Tearmytaco

    Joined:
    Mar 16, 2009
    Member:
    #14812
    Messages:
    1,023
    Gender:
    Male
    First Name:
    Bobby
    Wildomar
    Vehicle:
    08 PreRunner SR5 Long-Travel
    King 10" coilovers w/ resi. 3.5" over long travel kit. Factory spindles w/ ALLPRO gussets. Total Chaos tower gussets. Energy Poly cab mounts and steering rack mounts. Glassworks fenders and bedsides. Home fabbed bed cage. King 2.5x16 bypass shocks in the rear. DMZ long travel rear end. Race radio (2meter). Removed secondary carbon air filter. Exhaust dumped before the axle / no muffler. Phram fresh air cabin filter. K&N replacement filter, After market stereo, Grillcraft grill, custom fabled roof rack with 7" HID's, PRP race seats.
  13. Jun 1, 2012 at 11:24 AM
    #13
    YumaTRD

    YumaTRD 22R...Legends never die

    Joined:
    Aug 15, 2009
    Member:
    #21219
    Messages:
    3,069
    Gender:
    Male
    First Name:
    David
    El Cajon, CA hometown Yuma, AZ
    Vehicle:
    Solid Axle Yota
    Locked, Flat bed, 22R 5 speed, BFG KO's
    What are the rear 5100 and 5150's valved at for the 2nd gen tacoma for compresion and rebound? I'm really liking the 5165's and doing alot of research on them
     
To Top