Shimano SL-DE21, Deore
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Category:  Shifters
Name:  Shimano SL-DE21, Deore
Brand:  Shimano
Primary Group:  Deore
Model:  SL-DE21
Years:  1980 - 1984
Country:  Japan
Added By: JFischer on 12/18/10
Updated By: JFischer on 12/18/10
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Shimano SL-DE21, DeoreShimano SL-DE21, DeoreShimano SL-DE21, DeoreShimano SL-DE21, Deore
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Shifter Type DowntubeAttachment Style Clamp-On;
Downtube Braze-on (standard)
Shifting SystemsFrictionLever MarkingsDeore
Lever MaterialAluminum  
General Information
Deore Touring group shifters.  Came in both Clamp-on (SL-DE20) and Braze-On (SL-DE21) versions.  Weight for the braze on was 39g.  With the clamp 82g.  Used the Centeron Mechanism, for use with Centeron style Rear Derailleur only (per catalog), including of course the matching Deore Rear Derailleur.
Quality:Rarity:
 
 
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Resources:Reference & ChartsCatalogs
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Shimano SL-DE20, DeoreShimanoDeore
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Deore (First Generation)Shimano1980 - 1983, Touring & MTBView 12 Components
Details:   The original 'Deore' series of components, primarly designed for Touring bikes, but the extended range gearing made it more off-road capable than Shimano's other offerings of the time.
Brand Information(click to expand)

Shimano Model Number Prefix List:

BB Bottom Bracket BL Brake Lever BR BRake
CB Coaster Brake CJ Cassette Joint CN ChaiN
CP Chain Protecto CR Chain Ring CS Cassette Sprockets
DF chain DeFlector DH Dynamo Hub FC Front Crank
FD Front Derailleur FE Fork Ends FH FreeHub
FS Front Suspension HB HuB HD HanDle bar
HP Head Parts (Head Set) HS Handle Stem IF Inter-3 Freehub
LP LamP MF Multi Freewheel PD PeDal
RD Rear Derailleur RH Rollerbrake Hub RM RiM
RR ReflectoRs RS Rear Suspension SB Shift Brake lever (Nexus, ?)
SC Speed Calculator (cycle computer) SF Single Freewheel Freilaufritzel SG Speed chanGe hub
SH SHoes SL Shift Lever Schalthebel SM SMall parts
SP Seat Post SQ Seat Quick release SS Single Sprocket
TL TooL WH WHeel ST Shift Brake Lever (STI, Rapid Fire, etc)
 
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