Front Chainwheel (FC)

Series XTR Deore XT Deore LX STX-RC STX
Feature FC-M950 FC-M950-HG FC-M737-I FC-M739 FC-M739-5arm FC-M563-I FC-M569 FC-M569-5arm FC-MC36 FC-MC36-S FC-MC34 FC-MC34-B
Chain
IG X   X X X X X X X X X X
HG   X                    
Stainless steel nut & bolt X X X X X X X X X X X X
Chain ring Triple Triple Triple Triple Triple Triple Triple Triple Triple Triple Triple Triple
PCD (mm) 112/68 (mm) 110/74 (mm) 94/58 (mm) 104/64 (mm) 94/58 (mm) 94/58 (mm) 104/64 (mm) 94/58 (mm) 94/58 (mm) 94/58 (mm) 94/58 (mm) 94/58 (mm)
Chain guard available     X X X X X X X X X X
Bottom bracket BB-M950 BB-M950 BB-UN72 BB-UN72 BB-UN72 BB-UN52 BB-UN52 BB-UN52 BB-UN52 BB-UN52 BB-LP26(E) BB-LP26(E)
Crank Arm Length
165 mm X X X X X              
167.5 mm X X X X X              
170 mm X X X X X X X X X X X X
172.5 mm X X X X X              
175 mm X X X X X X X X X X X X
177.5 mm X X X X X              
180 mm X X X X X              
Chain Ring Teeth
Top 46T 48T/46T 42T 42T/44T 42T/44T 42T 42T 42T 42T 42T 42T 42T
Middle 34T 36T 32T 32T 32T 32T 32T 32T 32T 32T 32T 32T
Low 24T 26T 22T 22T 22T 22T 22T 22T 22T 22T 22T 22T
Chain Line
47.5 mm 112.5 mm 112.5 mm MM107 MM110 MM110 MM107 MM110 MM110 MM110 MM110 MM110 (-E) MM110 (-E)
50 mm 116 mm 116 mm LL113 LL113 LL113 LL113 LL113 LL113 LL113 LL113 LL113 (-E) LL113 (-E)
Crank Arm Material: AL = Aluminum / Finish: AN = Anodized, PA = Painted, PP = Painted/Polished, POL = Polished, CHR = Chromica
Material AL AL AL AL AL AL AL AL AL AL AL AL
Finish PA PA AN AN AN PP POL POL CHR POL POL POL
Chain Ring Material: AL = Aluminum / Finish: AN = Anodized, PA = Painted, ST = Steel, CHR = Chromica
Top
Material AL AL AL AL AL AL AL AL AL AL Steel Steel
Finish AN AN AN AN AN PA AN PA AN AN CHR ST
Middle Material: AL = Aluminum / Finish: SP = Special Plated, PB = Pearl Bright
Material AL AL AL AL AL AL AL AL Steel Steel Steel Steel
Finish SP AN SP SP SP SP SP SP PB PB PB PB
Low Material: AL = Aluminum / Finish: SP = Special Plated, CP = Chrome Plated, PB = Pearl Bright
Material AL AL Steel AL Steel Steel AL Steel Steel Steel Steel Steel
Finish SP Anodized CP SP CP CP SP CP PB PB PB PB
  with 4-arm chain ring with 5-arm adaptor   New with 4-arm New with 5-arm   New with 4-arm New with 5-arm   Minor change   Minor change