FSA Sealed Cartridge Bottom Bracket 68x113mm JIS Square Taper English Thread Steel Cups

Reliable square taper bottom bracket replacement with sealed bearings and durable steel construction. If you're bringing an older drivetrain back to life or replacing a worn-out bottom bracket, this FSA 68x113mm JIS square taper unit is a straightforward, dependable option. Built with a forged chromoly spindle and sealed cartridge bearings, it’s designed for long service intervals with minimal maintenance. Key Functional Details JIS square taper interface (compatible with most Shimano/FSA square taper cranksets) 68mm English-threaded shell (standard for most road, hybrid, and older MTB frames) 113mm spindle length (common for road double cranksets) Sealed cartridge bearings for low maintenance and durability Forged chromoly spindle for strength under load Steel cups for long-term durability and secure installation Oversized 3/16" ball bearings for smoother rotation and longevity Technical Specifications Shell Width: 68mm Threading: English (BSA) Spindle Interface: Square Taper (JIS) Spindle Length: 113mm Bearing Type: Sealed cartridge Cup Material: Steel Spindle Material: Forged chromoly Weight: 295g Color: Silver Compatibility & Technical Notes Fits frames with 68mm English-threaded (BSA) bottom bracket shells Designed for JIS square taper cranksets (Shimano, FSA, many aftermarket options) 113mm spindle length is typical for road double cranksets—verify required spindle length before purchase Not compatible with ISIS, Octalink, or modern external bearing cranksets Left and right cup threading differs (standard BSA install—drive side is reverse threaded) Service / Ownership Context Ideal replacement for worn or creaking square taper bottom brackets Sealed unit—no routine bearing service required, replace when worn Install requires proper bottom bracket tool and torque spec adherence Common service item on older road bikes, hybrids, and entry-level MTBs Great option for budget-conscious repairs where full drivetrain upgrade isn’t needed Fit & Use Signals Good Fit: Older bikes using square taper cranksets, commuters, budget rebuilds, reliable daily riders Not A Fit: Modern Hollowtech II, SRAM DUB, BB30/PF30, or press-fit systems Use Case: Replacement part, drivetrain refresh, restoring older bikes to working condition 1. Real Mechanic Insights - 113mm spindle length is critical—wrong length will mess up chainline and front shifting - JIS vs ISO square taper confusion still happens—this is JIS (Shimano standard), which fits most setups - Steel cups are more forgiving during install than aluminum—less risk of cross-thread damage - Always chase and face older frames before install if threads are questionable 2. Typical Customer Searches - “68x113 bottom bracket square taper” - “Shimano square taper BB replacement” - “fix creaking bottom bracket older bike” - “what bottom bracket do I need 68mm shell” 3. Often Replacing - Worn or creaking OEM square taper bottom brackets - Rusted or seized BB units on older bikes - Loose spindle causing play in crank arms 4. Good Fit / Not A Fit - Good Fit: Shimano square taper cranks, FSA Tempo, older Sora/Claris setups - Not A Fit: SRAM DUB, Shimano Hollowtech II, press-fit BB systems 5. Recommended Shop Pairings - Bottom bracket installation service - Crank arm inspection or replacement - New chain + cassette if drivetrain is worn - Pedal refresh if customer is doing a full drivetrain cleanup 6. What Customers Compare This To - Shimano UN300 / UN55 bottom brackets - Generic square taper BBs from Origin8 or Sunlite - Upgrading vs replacing entire crankset + BB system