These were used by Prowheel, Late 90's early 2000's. CHAINRING GUARD PROTECTOR 48 TEETH CHAINGUARD PROTECTOR MTB ETC NEW. Chain ring guard protector to fit chain wheels with 5 threaded holes. Maximum fit 48Teeth chainwheel.
Shimano FD-TX800 Tourney TX Front Derailleur Dual-Pull 42/48 Teeth 63-66deg
XLC Chain guard Cover CG-K01 smoked 46-48 Teeth Chain ring Cotterless Axle
Dnp Triple Front Derailleur Gear Mech 31.8mmTop Pull For Up To 48 Teeth Chain
48 TEETH CHAINRING GUARD PROTECTOR OUTER CHAINGUARD 5 BOLT 96mm SPACING 205mm
Shimano Biopace Chainring 48 Teeth 110mm BCD 5-Arm Steel 110mm
Shimano Front Derailleur FD-TX800 Tourney TX Dual-Pull 42/48 Teeth 63-66deg