About The FSA K-Force PowerBox Team Edition

The K-Force PowerBox Team Edition is FSA's power meter crankset built for riders who want direct power data without sacrificing crank stiffness or weight. This latest edition adds left and right Bluetooth connections for balance accuracy, and drops weight to 690 grams — making it one of the lightest and stiffest power meter cranks available.

FSA notes that weight and stiffness are the specific reasons its Pro Tour teams have chosen this crank during competition, which matters because a power meter crank that flexes under load introduces measurement error along with lost efficiency. The crank combines hollow 3K carbon fiber arms with a carbon composite construction and CNC-machined chainrings.

Who It's For

  • Racers and serious training riders who want left/right power balance data built into the crank itself
  • Riders on BB386EVO-compatible frames looking for a direct-mount chainring interface
  • Not necessary for riders who don't train or race with power data — this is a power meter crank first

What to Look For

  • Compatibility: uses a 30mm BB386EVO spindle and Direct Mount chainring interface — confirm your frame's bottom bracket standard before ordering
  • Chainring size: available in 53/39T, 52/36T, 50/34T, 48/32T, and 46/30T (11-speed) — pick based on your terrain and gearing needs
  • Crank length: offered in 165, 167.5, 170, 172.5, and 175mm — get properly fit rather than guessing

Key Features

Arms: Hollow 3K carbon fiber arms combined with a carbon composite construction achieve the crank's 690-gram weight without compromising the stiffness a power meter crank needs for accurate readings.

Power meter: Left and right Bluetooth connections provide independent power balance data, which is the crank's core feature and what separates it from a standard non-instrumented crankset.

Chainrings: AL7075 100% CNC-machined chainrings in a Direct Mount format pair with a 30mm CNC-machined AL7050 BB386EVO spindle.

Weight: At 690 grams for the 53/39T configuration, it's positioned by FSA as one of the lightest and stiffest power meter cranks on the market.

Rider Intent Summary

  • Biggest strengths: left/right Bluetooth power balance in a 690-gram crank — light for the power meter category
  • Tradeoffs: requires a BB386EVO-compatible frame, and Direct Mount chainrings limit aftermarket chainring options to that standard
  • What makes it different: FSA's own Pro Tour teams use this specific crank in competition, citing its weight and stiffness as the deciding factors

Victory's Take

At Victory Bicycle Studio, we recommend the PowerBox Team Edition to racers who train and race with power data and don't want to compromise crank stiffness to get it.

What you get

  • Arms - Hollow 3K carbon fiber
  • Power meter - Left/right Bluetooth balance
  • Weight - 690g (53/39T)
FSA K-Force PowerBox Team Edition

FSA

FSA K-Force PowerBox Team Edition

Regular price $1,092.00 USD
Sale price $1,092.00 USD Regular price

Frequently Asked Questions

How is the bike packaged and how long does delivery take?

All bikes are securely packaged to ensure that damage doesn't occur during shipping. All parts of the bike are padded and if needed, zip tied to minimize or eliminate movement inside the box. Once a bike is handed to the shipping company (usually Fedex or UPS), depending on your location, delivery will range from 1 day to 8 days. If you do choose the option for Professional Assembly or White Glove Delivery, this can add anywhere from 2 days to 5 days to the lead time.

Can I finance the purchase of my new bike?

Yes.  Simply select the Shop Pay Installments option which will allow you to buy now and pay later.  Shop Pay Installments is powered by Affirm.  If you would like to determine your spending limit, simply download the Shop app or the Affirm app on your smartphone and after you create an account on one of these apps, the app will let you know what is your spending limit.

Can I return the bike if it doesn't suit my needs?

Our return process is as follows. The customer is responsible for the return label ($150). Once the returned bike arrives at our warehouse, our team will inspect it and make sure it is in new condition and undamaged. Once we verify, we will process the return and issue a refund to the original payment method on file. To clarify the amount refunded, it would just be the amount of the bike (and tax if applicable) less the $150 shipping label that we provided, but the original shipping is not refunded. So if the original bike cost $4,500 and shipping was $150 (so you paid $4,650), you would be refunded $4,350 (the $4,500 less $150 for the return label) assuming the bike was returned in new and un-used condition and within the 30 day return period.

What does the warranty of my new bike or product cover and what is the warranty period?

Depending on the bike or any product, different companies have different warranty policies.  If you do ever have an issue with your bike or any product, simply email us at online@victorybicyclestudio.com and we will assist with any warranty issues and clarify the warranty for the affected product.

Can I have my bike serviced at any bike shop?

Typically, to avoid any issues with your warranty, you should bring your bike to a certified mechanic or bike store for that bike (i.e. if you have a Trek bicycle, you should bring the bike to be serviced to a local bike store that is an authorized Trek dealer).  If you need assistance, simply email us at online@victorybicyclestudio.com and we can direct you to a certified dealer of your bike.

Do you ship bikes internationally?

We unfortunately do not ship bikes outside of the 48 contiguous states of the United States. We do recommend for international customers to open (or use a current account) account with a freight forwarding company. If you use a freight forwarding company located in the U.S., make sure to put your billing address for a dedicated credit card as the same address as the freight forwarder so that you don't have any credit card or payment method issues).

Once you do this, simply place an order with us and we can ship to the U.S. address as long as the credit card doesn't get rejected. Once the freight forwarder has the box/order/shipment, you would instruct them to then ship to you in your home country and they would charge you their own shipping charge to ship to your international address.

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.

What happens if my package arrives damaged?

If your package arrives damaged, email online@victorybicyclestudio.com with pictures of all angles of the box and pictures of the damaged product and we will work with you to either send a new replacement asap and coordinate return (or re-imburse you for labor or costs incurred to fix the issue at your local bike store).

Are pedals included with the bike?

If you do not see pedals in the bullet point product specs on the product page, the bike does not come equipped with pedals.  Many manufacturers do not spec bikes with pedals, so they are often purchased separately.

If I only pay the $150 for bike shipping, can I assemble the bike on my own?

Victory Bicycle Studio highly recommends that you bring your bike to your local certified bike store for the brand of the bike that you purchased. If you do attempt to assemble the bike and damage occurs, this may result in your warranty not being honored. For that reason, we do highly recommend to select our Professional Assembly option for $299.