- Brand: RaceFace
- Color: Green
- Frame Material: Rubber
- Sport Type: Cycling
- Model Name: Raceface 91-5203gn
- Protective rubber boots
- For carbon crank arms
- Durable Race Face proprietary plastic blend
$12.32 Original price was: $12.32.$8.62Current price is: $8.62.

| Color | Black, Blue, Green, Grey, Orange, Red, Turquoise, Yellow |
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Jay R. –
The Race Face crank boot protectors are a simple yet superbly effective solution for protecting a mountain bike crank arm from damage. What you get are molded rubber-like covers that are nice and thick, offering protection from scratches and impact that clear-type “skins” cannot match. Installation is as easy as removing your pedals, slipping the boots on, then re-installing your pedals. I have used these on SRAM/Truvative X9 and X0 cranksets and they fit perfectly.Two things to note: first of all, there is no mention of a specific left or right side on the products, and you would assume that all crank arms are identical in shape at the ends, but if the Race Face boots don’t wuite slip all the way onto your crank arm, swap the left boot for the right boot and they should be centered and all the way on (I experienced this with both cranks I tested). Second note – upon reading other reviews here, some say they fit other brand/model cranks, some say they don’t – but if you take a look at the Race Face website, they actually have a list of what cranks they know are compatible:(from Race Face website)Fits:Race Face:Next/Next SLSixcRespondSram:XXXONoirFSA:GravityGravity LiteShimano:SaintNotice though that my X9 and X0 crankset is not listed – yet they fit perfectly – so if you do not have any of the cranksets listed the only way you can find out is to try them. Not that big of a deal to experiment since it’s only $9 a pair, which is a value considering you are protecting your $250-up crankset from rock strikes and damage.
TK –
RaceFace makes three different boot covers for the following cranks types. I did the resarch to make this east for your. Take a few minutes to read this information.NOTE: When ordering these boot covers you will receive the Carbon Crank Boots (size medium). Read on for details.1. NEXT SL G4 CRANK BOOTSThese are built specifically for the Next SL G4 cranks. Also, these crank boot covers have the word “NEXT” printed on them, whereas the other boots only have RaceFace on them.2. CARBON CRANK BOOTS (this is the version you will receive if ordering here).This is the MEDIUM SIZE boot cover.The carbon crank boot covers are compatible with:- Next SL Cinch (G3)- Sixc Cinch- Chester- Respond- Next/Next SL (24mm Spindle)- Sixc (24mm Spindle)- Also, most other popular carbon MTB cranks and assorted alloy DH cranksThe carbon crank boots are sold under the following part numbers based on color selection. The part number will be printed on a sticker affixed to the package you receive so you can verify what you received.A10066GRY = greyA10066BLU = blueA10066RED = redA10066TURQ = turquoiseA10066YEL = yellowA10066GRN = greenA10066PIN = pinkA10066ORA = orangA10066BLK = black3. ALLOY CRANK BOOTThis is the SMALL SIZE boot cover.The alloy crank boot covers are compatible with:- Turbine Cinch- Atlas Cinch- Atlas (24mm Spindle)- Turbine (24mm Spindle)- Aeffect Cinch (175mm length ONLY)- Also, most other popular alloy MTB cranks (except some alloy DH cranksets)The alloy crank boots are sold under the following part numbers based on color selection. The part number will be printed on a sticker affixed to the package you receive so you can verify what you received.- A10068BLK = black- A10068GRY = grey- A10068BLU = blue- A10068RED = red- A10068TURQ = turquoise- A10068362 = website did not specify color- A10068388 = website did not specify color- A10068021 = website did not specify colorReferenceI pulled this information directly from the RaceFace websiteMy ImpressionThis is a semi-hard plastic that will do the job it is intended for.Although, these crank boots did not fit my cranks from this order, I did purchase a pair from another vendor that sold the correct size (small) for my cranks. However, they are all made from the same material, so I am giving five stars for quality of product.I installed the Alloy Crank Boots (size small) on my Stumpjumper which has Aeffect cranks. They fit good. The only thing I noticed is that the hole were you put your Allen key is a little off, but the boot cover is playable enough that I was able to install it with no problem.
Joe Customer –
There’s no rocket science in this product. It’s simple, and it works in saving your carbon crank arm ends from most hard contact. I had these on my last bike and loved them. So I didn’t even think about it when I got a newer bike and needed some crank arm protection, other than now I have SRAM X01 (Eagle) and previously I had Race Face. These don’t fit exactly on SRAM, but close enough. What was aggravating to start with is before I placed my order the delivery time showed 3-5 days. AFTER I placed the order it suddenly jumped to 10-14 days. I groaned & rolled my eyes, and sucked it up. Today they finally get here (no notification either #Amazon), and of course, the color is not even close to what was displayed. Like I said, I had these before on my last bike which was a Yeti. The color was very close to Yeti teal. My new bike is also a Yeti in their classic teal color. I thought these would look great at the tip of my black SRAM cranks, but the color is something like a green ocean color. I don’t know, but it’s definitely NOT the color displayed or that I had before. I don’t know if #RaceFace changed the color, or #WorldWideCyclery just thew in whatever they had laying around, but now I have to decide whether to pay for return postage and go through the pain of returning these and waiting forever for a replacement that may not be different, or a refund of less than $10, or just eat it and be pissed off that I got taken.If you own a Yeti or Santa Cruz in a teal color and think these will go well with it, save your money. It’s not even close. I could have bought black ones at any of numerous local bike shops around me and not have to wait weeks to get them. Gee, thanks. You’ve just won yourself another dissatisfied now ex-customer. I won’t be ordering these again.2021 Update: WorldWide Cyclery really impressed me with their fast and thorough response. They were very accommodating and quickly issued a credit. I was really blown away to be honest. Even though this product didn’t look as I expected, I would still buy from WorldWide Cyclery again. They definitely stand behind their business.
Allyson –
Easy to install and snug fit. Looks great on the cranks and works!
Randy Lemons –
Helps protect crank arm from rock strikes…very useful
Paul in AZ –
Simple product that will protect the cranks. Used these on my bike and worked great.