Introducing the lightweight Cromo Steel hollow axle JIS square taper bottom bracket!

 

    CRANKSET FIT:

    • ALL JIS 2.0° Degree Square Taper type.

     

    FRAME FIT:

    • English: BSA 1.37"x24T R/L cups for 68mm
    • Italian: ITA 36x24T R/R cups for 70mm
    • Installation:  ISIS tool, Shimano Octalink, or Park Tool #BBT-22, #BBT-32

     

    BEARING FEATURES:

    • Bearing Race Material: 52100 High Carbon Chromium alloy races ground and polished ball path ensures smooth and quiet ride in all conditions. Vacuum de-gassing process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable.
    • Bearing Grade: ABEC 5 standard. Bearing design must pass all tests, which include noise testing at high RPM, extremely close tolerances for I.D. and O.D., roundness of ball, trueness of the races and micro surface finishes of balls and races.
    • Bearing Ball Density: Grade 5 Chromium Steel Balls. High precision balls are within 5/1,000,000″ round. R-64 hardness, of the highest grade.
    • Low Friction Nylon Retainer diminishes rolling resistance making these bearings run smoother and quieter.
    • Enclosure Type: Low Friction Dual Lip Silicone - Keeps grease in and invading contaminents out ensuring longer bearing life.
    • Lubricant: Kluber NBU 12/300KP Provides excellent protection against the elements of rain, dirt, muck, and sand over extended periods of testing, far outlasting other greases.

     

    PRODUCTS SPECIFICATIONS:

    • SHAFT: CNC machined hollow cromoly steel shaft for extra weight savings
    • BEARINGS: ABEC 5 standard. Bearings must pass all tolerance tests (See Bearing Specifications)
    • ALLOY CUPS: CNC machined durable forged aluminum cups with X-SEALS
    • BODY: Full 3K carbon fiber body for lightweight and beauty
    • SEALS: X-SEALS provide better protection from the elements and reduce energy wasting friction Alloy CNC cold forged cups with X-Seals
    • BOLTS: Steel high quality bolts included: 8Mx20
    • AXLE LENGTH:  Specifications: See chart in pictures.

     

    WEIGHTS:

    • 103mm: 207 grams
    • 107mm: 211 grams
    • 110mm: 213 grams
    • 113mm: 220 grams
    • 116mm: 224 grams
    • 118mm: 226 grams
    • 122mm: 232 grams
    • 127mm: 237 grams

    Cromo Steel JIS 2.0° Square Taper Bottom Bracket

    $49.95Price
    Size
    • OM866CM

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