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1991 Bridgestone MB-4


This 1991 Bridgestone MB-4 is missing most of its decals and has a severely scratched fork, and now it's equipped similar to the setup I toured with from Houston to the Canadian border. It had a seized seatpost so the owner sold it for $35, but that price also reflects missing components. It appears the owner tried several methods including heating the insertion point, which toasted the paint. The seatpost clamp was removed and the post itself was full of wrench marks. I just hammered the post down a little (used tape around post to widen diameter and prevent it from slipping into tube), and it came easily out. The other issue was the driveside chainstay is pretty rusty from chain slap.

  • Shimano XT M739 rear derailleur. $10 bike swap meet.
  • Shimano XT M739 top-swing bottom-pull front derailleur. $10 shipped online auction.
  • Ritchey Logic 1" threaded headset.
  • Kalloy UNO alloy stem 1" stem.
  • Kalloy UNO alloy handlebar.
  • Kalloy UNO seat binder bolt.
  • Marin Lite 27.0 seatpost. $5 bike swap meet.
  • Nashbar gel saddle. $20 online.
  • Double compound grips. $3.
  • SRAM PC68 8-speed chain. $20.
  • Sugino GP crankset.
  • Delta Lite skewers. $2.
  • Nashbar Rodeo pedals. $22 (shown with Shimano XT M737 SPD pedals with platform adapters).
  • Dia-Compe Power Control 7 (PC-7) brake levers. $1 bike swap meet.
  • Suntour XC Expert 3x7 thumb shifters (front is friction while rear is friction or indexing).
  • Dia-Compe X1 cantilever brakes.
  • Ritchey Vantage Expert rims with 14-gauge Wheelsmith spokes and Sansin hubs. 7-speed freewheel. Someone drilled it for shraeder, but originally presta size.
  • Geax Blade 26x1.85 tires. $24 for both. Review of this tire (amazingly high marks for inexpensive wired tires).
  • Forte ultralite tubes (with Tyvek homemade tire liners). $8 for both.


    Old Bridgestone bicycle catalogs can be found here.

    My nicer 1991 Bridgestone MB-4 with XT/XTR components.


    1991 Bridgestone MB-4

    1991 Bridgestone MB-4