Eightpins - Dropper seatposts Integration into the bike frame

More travel. No swapping or trimming. Quick and easy height adjustment with a wide range of adjustment.

Vergleich von Teleskopsattelstützen wie Fox Transfer, Bikeyoke revive, Rock Shox Reverb, OneUp, BikeYoke: Revive, Divine OneUp: Dropper Post V2, V3 Fox: Transfer, Transfer Factory PNW Components: Cascade, Loam, Bachelor, Rainier Crankbrothers: Highline Brand-X: Ascend KS: LEV, LEV Integra 9point8: Fall Line welche Dropper Post bei welchen die Gleitlager ausschlagen, die Dropperpost hemmt, Teleskopsattelstütze fährt nicht aus mit Eightpins Teleskopsattelstütze.
Vergleich herkömmlicher Teleskopsattelstützen wie Fox Transfer, Bikeyoke revive, Rock Shox Reverb, OneUp, BikeYoke: Revive, Divine, Triggy OneUp: Dropper Post V2, V3 Fox: Transfer, Transfer Factory PNW Components: Cascade, Loam, Bachelor, Rainier Crankbrothers: Highline Brand-X: Ascend KS: LEV, LEV Integra 9point8: Fall Line welche Dropper Post Flex, geknickte Bowdenzüge, stecken bleiben, nicht ausfahren, Dropper post flexing aufweisen. Mit dem integrierten Eightpins System.
Defekter abgeknickter Bowdenzug nach einstellen einer Teleskopsattelsttütze.

Problems with Conventional Telescopic Seatposts

  • If the tubes overlap by too little, it results in extreme leverage forces on the bushing
  • Poor-quality and undersized bushinges wear out easily
  • Worn-out bushinges create radial play and lead to self-locking
  • The seatpost becomes harder to lower and has lost its reliability
  • Thin tubes combined with long travels (200 mm+) flex backward by up to 13 mm under load
  • Noticeably elastic ride feel and altered seat angle
  • Bowden cables often get stuck during Height adjustment and become damaged
  • A tool is required for height adjustment
  • Excessive tightening torque on the Seatpost clamp causes the seatpost to jam
  • The dual-stage telescoping mechanism limits the seatpost’s adjustment range
  • If a telescopic seatpost has too much or too little travel, it must be replaced
  • Thin and long telescoping seat tubes limit the maximum allowable rider weight

Integrated performance. No add-ons.

  • Eightpins Teleskopsattelstütze mit Pfeildarstellung zur Erklärung der Integration, Hub und Höheneinstellung. keine Geknickten Bowdenzüge, keine hemmende nicht ausfahrende Teleskopsattelstütze, keine ausgeschlagenen Gleitlager, kein Sattelstützen Flexing, kein Dropper Post Flexing, Kein Dropperpost Flex

    👍 Tube-in-tube

    • The seat tube of the bicycle frame serves as the outer tube and housing for the Eightpins seatpost
    • The thick, continuous seat post tube blends seamlessly into the bike’s design
    • Patented Eightpins mechanisms for adjusting the seat height
    • A single tube is sufficient to provide plenty of travel and a wide range of adjustment
  • Darstellung einer normal Dropperpost Teleskopsattelstütze zur Veranschaulichung der Nachteile der Rohr in Rohr in Rohr Systeme. Geknickte Bowdenzüge, Kemmende nicht ausfahrende Teleskopsattelstütze, ausgeschlagene Gleitlager, Sattelstützen Flexing, Dropper Post Flexing.

    👎 Tube within a tube within a tube

    • The original retrofit concept went unchallenged for over 20 years.
    • Even today, dropper seatposts are still clamped into the seat tube of the bicycle frame using a Seatpost clamp
    • Bowden cables can easily be damaged when adjusting the saddle height
    • Height adjustment is cumbersome and requires tools as well as technical expertise
Bild zeigt eine Eightpins H01 Sattelstütze verbaut in einem Rotwild 375 Bike mit einem Kornfeld im Hintergrund.

More stiffness. Less Friction. Durable bushing with Eightpins seatposts

  • Large 33-mm tube diameter ensures sufficient stiffness and stability
  • Up to 100% more clearance between bushing assemblies than conventional tube-in-tube-in-tube systems
  • Reduced wear and consistently smooth lowering
  • No self-locking of the seatpost during lowering due to worn-out bushinges
  • The bicycle frame’s seat tube serves as the guide tube—maximum stability
  • A scraper and a permanently seated oil-soaked felt ring ensure constant lubrication and protection against dirt

Goodbye, Seatpost clamp

  • Bicycle frame interface for integrated dropper seatposts according to the ISPS mounting standard
  • A Postpin axle connects the seatpost to the frame
  • Form-fit connection between the frame and the telescopic seatpost
  • No slipping or unintended twisting possible
  • No clamped or crushed tubes
  • No getting stuck due to excessive clamping force from the Seatpost clamp
  • 120-year-old clamping technology finally replaced: safer, more precise, more reliable
Bild zeigt das einführen des Eightpins Bushings bzw. Gleitbuchsenrohrs in den Rahmen eines Rotwild, Bulls, Ghost, Liteville oder Thoemus Rahmen.
Eightpins Bushing tubes with Teflon bushing

High-Quality Storage

  • Maximum smoothness when extending and retracting thanks to high-quality sliding elements
  • Special Teflon bushings—the same high performance standard as in suspension forks
  • Integrated into an ultra-thin, precision-machined aluminum tube
  • The slide bushing tube is inserted into the frame seat tube from above
  • Ensures stable, play-free guidance of the seatpost tube
  • Efficiently transfers bending forces into the bicycle frame—for consistently precise performance and a long service life
Eightpins Außenhülse bzw. Labeltube

Reliable Lubrication

  • Optimal oil supply—the seatpost tube slides in and out smoothly
  • Outer sleeve with a large integrated oil reservoir
  • The integrated felt ring ensures a constant, evenly distributed film of oil on the seatpost tube
  • Reduces Friction, protects the bushing, and extends the service life of the entire system
Bild zeigt den Querschnitt und eine Explosionszeichnung der neuen Eightpins Carbon Rahmen Postpin Achse zur Darstellung des neuen und einfacheren Integrationsstandards.
Bild zeigt den Querschnitt und eine Explosionszeichnung der neuen Eightpins Carbon Rahmen Postpin Achse zur Darstellung des neuen und einfacheren Integrationsstandards.

💡NEW: Carbon Postpin Interface

  • Quick and easy installation
  • No more adjustments with an adjustment ring required
  • No longer requires a threaded Aluminum insert in the carbon frame
  • The interface can be manufactured directly into the Carbon mold
  • No more variable costs for the Eightpins ISPS integration interface
Bild zeigt das obere Ende eine Carbon Sitzrohrs eines Rotwild REX 900 Fahrrad Rahmens mit der neuen Eightpins Carbon Vollintegration.
Bild zeigt einen Querschnitt und eine Explosionszeichnung zur Erklärung der neuen Eightpins Vollintegration welche aktuell im Rotwild REX 900 zu finden ist.

💡NEW: Full integration of the Carbon Frame

  • Extremely clean and tidy appearance
  • CNC-machined aluminum insert is glued into the frame
  • Precise bearing play for even better guidance
  • High-quality Teflon bearings that snap in and are easy to replace
  • Very low-profile new seal
  • Low stack height for maximum Travel
  • Bild zeigt einen Zeichnungsausschnitt der Eightpins ISPS Integrations Standard Zeichnung.

    ISPS – Integrated Seatpost Standard

    • Eightpins’ advanced integration standard for easy adjustment to rider height
    • 99% of all riders can adjust the Seatpost in just a few seconds—no cutting, no swapping
    • A unified system that optimally matches the frame and Seatpost
  • Bild zeigt Unterkörper eines Bikers auf einem E-Bike Liteville 301CE in winterlicher Landschaft.

    More travel for greater freedom of movement

    • NGS2 with up to 258 mm of travel (XXL)
    • Maximum travel for everyone—travel automatically adjusts to your rider height during height adjustment
    • Significantly more Freedom of movement—ideal for technical trails and steep descents
    • The saddle gets in the way less, without compromising stability or support
  • Bild zeigt Umrisse von verschieden großen Personen hintereinander um die einstellbare Größenbandbreite darzustellen.

    Wide adjustment range

    • Depending on size, 102–150 mm adjustment range for fine-tuning the seat height
    • The frame and Seatpost form a coordinated system that grows along with the frame size
    • Each frame follows one of the two ISPS sizes to ensure perfect ergonomics

ISPS Standard for 4 sizes: S–XL

ISPS MIT 4 GRÖSSEN S M L XL
Maximaler Hub NGS2 168 192 210 228
Maximaler Hub H01 144 162 175 196
Kurbellänge 165 170 175 175
Oberste Position 725 773 821 881
Einstellbereich 114 120 132 150
Unterste Position 611 653 689 731

ISPS Standard for 6 sizes: XS–XXL

ISPS MIT 6 GRÖSSEN XS S M L XL XXL
Maximaler Hub NGS2 168 192 216 228 240 258
Maximaler Hub H01 141 159 175 185 196 212
Kurbellänge 165 165 170 175 175 180
Oberste Position 707 749 785 821 857 899
Einstellbereich 102 102 102 114 126 132
Unterste Position 605 647 683 707 731 767

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