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Specifications Series STX 1997
Rear
Derailleur
Model No. RD-MC34
Speeds 7-speed
Max. Sprocket 30T
Min. Sprocket 11T
F/Difference 20T max.
Total Capacity 29T
Advanced Light Action yes
IG/HG/UG Chain Compatibility IG compatible
Note stainless steel fasteners
*Front
Derailleur
Model No. FD-MC34/FD-MC34-E FD-MC32
Top-Low Max. Capacity 20T 22T
Top-Middle Min. Capacity 10T 10T
Top Gear Teeth 42T 42T
Clamp Diameter 28.0 - 28.6/31.8/34.9mm 28.0 - 28.6/31.8/34.9mm
Chain Stay Angle 63 - 66°, 66 - 69°63 - 66°, 66 - 69°
Advanced Light Action yes yes
Top-Swing Action yes no
Note stainless steel fasteners stainless steel fasteners
Rapidfire/
EZ-Fire Plus
Model No. ST-MC34 ST-MC35 SL-MC37
Dual SIS Rear 7-speed7-speed 7-speed
Front tripletriple triple
Lever Length 2-finger3-finger --
Optical Gear Display sliding type (above bar) sliding type (below bar)no
Note Rapidfire SL type Rapidfire Plus type/bent handlebar availableRapidfire SL type/ shift lever set only
EZ-Fire/
Shift/Brake
Lever
Model No. not available

 

Cantilever
Brake
Model No. BR-MC32-E
Arm Length M, L
Brake Pad Type M65T
M-System/Anti-Vibration M-System Anti-Vibration M-system
Low-Flex Design no
Crankset Model No. FC-MC34/FC-MC34-B
Gearing 42-32-22T
Bolt Circle Diameter 94/58mm
Crank Length 170/175mm
IG Compatible yes
HyperDrive-C w/SGX-II
Sealed
Cartridge
Bottom
Bracket
Model No. BB-UN52/**BB-UN52-E **BB-LP26-E
Marking/Spindle Length MM110/110.5mm LL113/113mm MM110/110.5mm LL113/113mm
Chain Line 47.5mm 50.0mm 47.5mm 50.0mm
Shell Width 68/70mm 68/70/73mm 68/70mm 68/70/73mm
Rear
Freehub
Model No. FH-MC32 FH-R050/Roller Clutch Freehub FH-MC12-P
Speeds 7-speed 7-speed 7-speed
Over Lock Nut Dimension 130/135mm 130/135mm 130/135mm
Spoke Holes 36/32H 36/32H 36/32H
QR Lever aluminum aluminum aluminum
Front Hub Model No. HB-MC32
Over Lock Nut Dimension 100mm
Spoke Holes 36/32H
QR Lever aluminum
Cassette
Sprocket/
Freewheel
Model No. CS-IG60
Speeds 7-speed
IG/HG/UG IG
Group Identification aj (11-28T), am (11-30T)
Color chromica
Chain Model No. CN-IG51 CN-IG31
Type IG narrow IG narrow
Inner Link Finish barrel polished dark brown
Outer Link Finish nickel plated barrel polished
Link Pin chromizing treatment standard
Headset Model No. HP-MC30 HP-MC31
Thread BC1" x 24T.P.I. BC1-1/8" x 26T.P.I.
Stack Height45 37.6mm 37.6mm

 

*The E-type front derailleur mounts to the bottom bracket through a support plate and also requires a special boss or clamp adapter on the seat tube.

**E-type bottom bracket is for use with bottom bracket mount front derailleurs.