VeloBase.com - Component: Shimano #6439807 B-type shifter adapter, 600EX

Shimano #6439807 B-type shifter adapter, 600EX

Category:	Shifters
Name:	Shimano #6439807 B-type shifter adapter, 600EX
Brand:	Shimano
Primary Group:	600 Ultegra
Model:	6439807
Years:	N/A
Country:	Japan
Added By:	cudak888 on 07/28/12
Updated By:	cudak888 on 07/29/12
Additional Photos - click for full size

Verify Component Photos

Shifter Type	Adapter	Attachment Style	Downtube - Top Mount
Shifting Systems	6sp Dura-Ace SIS 6sp Shimano SIS 7sp Dura-Ace SIS 7sp Shimano SIS 8sp Dura-Ace SIS 8sp Shimano SIS Friction	Lever Markings
Lever Material	Steel

General Information
Top-mount adapter for the 600EX (6400-series) levers; essentially an updated variant of the same B-type braze-on mount left over from the Dura-Ace 7200, revised for mounting of the standardized SIS-type index shifters. Frame photo shows braze-on for the earlier variant of the Shimano B-type braze-on mount (used with Dura-Ace 7200).
Quality:		Rarity:

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Additional Resources
Resources:	Reference & Charts Catalogs

Component Groups
Primary Group Name	Brand	Quick Info	Browse Group Components
600 Ultegra, 6400 series	Shimano	1988 - 1998, Road Race	View 32 Components
Details: Shimano added the word 'Ultegra' to their 600 group set in 1988 with the introduction of the 6400 series groupset. Also often recognized by the tri-color stripe on many of the parts. The Ultegra group was developed to provide a high-performance racing type bicycle for amateur racers and performance oriented sports cyclists. Ultegra features polished bearing races, high strength steels, a striking modern colour treatment and compact high-tech design theme. This approach creates a new upgraded image for a fashionable high quality racing-type bicycle aimed at the performance cycling enthusiast. (1991 Dealer Manual)

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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