Shimano HP-M651, Deore DX (1 1/8")
Main Photo
Category:  Headsets
Name:  Shimano HP-M651, Deore DX (1 1/8")
Brand:  Shimano
Primary Group:  Deore DX M650 Series
Model:  HP-M651
Years:  1990 - 1993
Country:  Japan
Added By: JFischer on 07/13/11
Updated By: JFischer on 07/13/11
Additional Photos - click for full size
Shimano HP-M651, Deore DX (1 1/8")
Body MaterialAluminumUpper Bearing Size
Lower Bearing SizeCrown Race Size
Upper Cup MarkingsLower Cup Markings
Available Threading English/ISO/Italian (25.4mm x 24TPI)Stack Height 
General Information
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Additional Resources
Resources:Reference & ChartsCatalogs
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Shimano HP-M650, Deore DXShimanoDeore DX M650 Series
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Deore DX M650 SeriesShimano1990 - 1993, Mountain BikeView 11 Components
Details:   When introduced in 1990 it was the second rank group under Deore XT.  In 92 the new XTR group was introduced, pushing the DX group to third in line within the Shimano MTB line.
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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