NOS Simplex JUY 59 Rear Derailleur & Shifter: Riveted Badge - Plunger Push Rod Design - 1959 & 1960 - RARE

The JUY 59 was introduced in 1959 as an updated replacement for the JUY 51.  The overall profile is relatively similar, and the 59 has some significant upgrades.  First it did away with the...

NOS Simplex SLJ / Mavic SSC Retrofriction Shifter Left Spring #3667

Do you have a pair of Simplex or Mavic retrofriction downtube shifters that aren't working up to the full potential of these highly efficient models? Likely the culprit is the clutch springs. ...

NOS Simplex #2560 SLJ Rear Derailleur Lower Tension Spring: Super LJ 5000 / AR 615 NI

We came into a small supply of Simplex rear derailleur rebuild parts! Lower spring for all Super LJ 5000 models (5000 GT, 5000 T, 5000 CT) plus SLJ AR 615 NI / AR-615 Condition New old stock...

NOS Simplex #2973 Rear Derailleur Upper Tension Spring: Prestige / Criterium

We came into a small supply of Simplex rear derailleur rebuild parts! Upper spring for all Prestige and Criterium models. Condition New old stock. If you buy our remaining stock you can have the...

NOS Simplex #2975 Derailleur Cage Stop Pin: 10 Pack - Prestige / SX / LJ / ETC (Pack of 10 Pins))

This pin screws into your rear derailleur's outer cage plate and stops the cages rotation when the pin contacts the derailleur body. This is the pin required for Prestige derailleurs, some LJ and SX...

NOS Simplex #2975 Derailleur Cage Stop Pin: Prestige / SX / LJ / ETC (Sold Individually)

We came into a small supply of Simplex rear derailleur rebuild parts! This pin screws into your rear derailleur's outer cage plate and stops the cages rotation when the pin contacts the derailleur...

NOS SIMPLEX Demultiplicator + Cable Stop: #2343 - 1st Type 1960's Early 1970's

Rare first generation of the Simplex Demultiplicator, model #2343.  This one is all metal, with the old Simplex "S" logo engraved lightly on the band.  The 70's version of this was similar...

Simplex Criterium Downtube Shifters: #3007 3rd Type 1970 - Wing Logo (MINT)

Rare 1970 version of the Simplex Criterium shifters. These have the SIMPLEX wing logo on a band clamp, and the "S" logo on the black shifter blades.  Condition Mint or extremely close to it...

SIMPLEX Dual Tunnel Cable Guide Ref. 3594 L (EXC+)

Dual downtube shift cable guide.  This straight band clamp with the Simplex moniker was used in the 1970's and 1980's.  The earlier 1960's version had a pointed band with the S logo...

NOS SIMPLEX Demultiplicator + Cable Guide Ref. 3637 L: Dual Downtube Clamp

This gizmo is used (primarily) with friction bar end shifters to make the rear shifter less "sensitive" to input and easier to shift smoothly.  It changes the shift ratio to allow for bigger...

Vintage French Bicycle Drivetrain Display Art: 1970's - Stronglight TS - Simplex LJ - Holiday Gift - RARE!

This rare item was used by a 1970's bike shop to teach people how to shift their gears.  It's essentially a portion of a frame uniquely welded and attached to a baseplate.  Easy to hold...