About The SRAM S150 Eagle Transmission B1 12-Speed 32T Powerspline Boost 175mm Black Crankset
This 175mm S150 Eagle Transmission crankset is a long-arm option suited to taller riders or anyone whose fit favors more leverage. It runs aluminum arms with a 32T steel T-Type ring.
The 175mm black arms use a Powerspline spindle and require a 118/73 Powerspline bottom bracket, not included. Chainline is 52mm for Boost frames.
Who It's For
- Taller riders who need 175mm on an Eagle Transmission bike
- Riders replacing a 175mm crank and keeping the same length
- Boost frames with a 118/73 Powerspline bottom bracket
- Consider a different crank if your frame takes DUB, or if pedal strikes are a concern
What to Look For
- Spindle interface: Powerspline, with a 118/73 Powerspline bottom bracket sold separately.
- Length: 175mm on this listing.
- Chainline: 52mm, Boost.
Key Features
32T steel T-Type chainring. Mounts via SRAM's 3-bolt direct mount and is built for Eagle Transmission.
Aluminum arms. Robust aluminum in a black finish SRAM pairs with Eagle 70.
Powerspline. You will need a 118/73 Powerspline bottom bracket; it is not included.
175mm length. A long arm for riders who want more leverage per pedal stroke.
Rider Intent Summary
- Biggest strengths: Eagle Transmission compatibility in a long 175mm arm.
- Tradeoffs: Bottom bracket sold separately; longer arms reduce pedal clearance.
- What makes it different: A leverage-first length for taller riders.
Victory's Take
At Victory Bicycle Studio we fit 175mm mainly for taller riders, and we will flag it if your bike sits low. As with every S150, we confirm the Powerspline bottom bracket first.
Specifications
- Speeds: 12 (Eagle Transmission)
- Chainrings: Single
- Ring: 32T steel Eagle T-Type
- Chainring mount: SRAM 3-bolt direct mount
- Spindle interface: Powerspline
- Bottom bracket required: 118/73 Powerspline (not included)
- Chainline: 52mm
- Drivetrain spacing: Boost
- Crank length: 175mm
- Material: Aluminum arms
- Pedal thread: 9/16"
- Color: Black
- SRAM model ID: FC-S150-B1
- Bottom bracket: Not included
- Part number: 00.6118.773.004
What you get

SRAM S150 Eagle Transmission B1 12-Speed 32T Powerspline Boost 175mm Black Crankset
Frequently Asked Questions
Do you offer free shipping?
We do offer free shipping on non-bike orders over $100. We do not offer free shipping for bicycles unless it is a one time promotion. Generally, bike shipping will cost $150 and that covers just the shipping of the bike with no assembly. If you were to bring that bike to your local mechanic or bike store, you would pay them their assembly fee. If you choose our Professional Assembly option for $200, our service technicians would assemble the bike before shipping and then re-pack the bike safely for transit. When you receive the bike you would attach the front wheel, attach the seatpost/saddle, and raise the handlebars and clamp them. Those three items do have to be detached to minimize or eliminate the chance of damage in transit.
How much does shipping cost?
For orders of parts, accessories, apparel, etc. on orders under $100, shipping is a flat rate of $9.99. Regular bike shipping without assembly is $150, bike shipping with Professional Assembly is an additional $200 (so $350 in total which includes the $150 of regular shipping). Our White Glove Delivery option is $699 and that will cover the assembly of the bike and our White Glove Delivery partner delivering your dream bike to your front door, ready to ride!
How can I track my order?
When you place your online order, you will receive an instantaneous email update with your order number and order details, and shortly after, you will receive a follow up order email with the tracking number for your order. If you still need assistance with your order, feel free to email us at online@victorybicyclestudio.com and we will respond asap.