SHIMANO Saint FC-M815-1 Crankset Compatibility & Specifications

SHIMANO Saint FC-M815-1 Single ring Crankset (9 speed chain compatible)

The Saint single ring Hollowtech II Crankset is lighter and stiffer than ever before.

Hollowtech II Design: Increased strength by over 200%.
Single Specific Chainrings: Options for 34, 36, 38, 40, or 42T rings.
Longer BB Adapter Cups: New longer bottom bracket cups improve durability & compatibility with aftermarket chain guides.
Honeycomb Bash guard: The resin honeycomb design is super durable.

Model Number: FC-M815-1
Series: SAINT
Crank Construction: HOLLOWTECH II
Cassette Compatibility: 9-speed
Chain Compatibility: Super Narrow HG for 9-speed
4-Arm Chainrings: yes
Cahainring Sizes: 34/36/38/40/42T
Bolt Circle Diameter: 104mm
Crank Arm Length: 165/170/175mm
Crank Arms: forged aluminum / hollow type
Outer Chainring -
Middle Chainring: aluminum
Inner Chainring -
Chainring Bolts & Nuts aluminum (bolt), steel (nut)
Chain Guard: Bash Guard
Chaincase Compatible: no
Bottom Bracket: SM-BB80 included
E-type FD Compatible -
150mm axle total length
Chain Line: 57.9mm
BB Shell Width: 83mm
Average Weight: 1074g including BB (36T) (170mm)
To lock the crank you'll need Shimano crank-arm/cap tool TL-FC16.
To fit or remove the HollowTech II BB, you'll need Shimano Tool TL-FC32 or alternative is the 2 in 1 Park Tool Bottom Bracket Tool BBT-9C.

Compatible ONLY with 9 speed chains: CN-HG73, CN-7701, CN-HG93, CN-HG53.
Compatible with Sram 9 speed chains: PC-991, PC-971, PC-951.

Park Tool BBB-2 The Big Blue Book of Bicycle Repair - 2nd Edition