Which SRAM Red cranks for bb386evo?

Discuss light weight issues concerning road bikes & parts.
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savechief
Posts: 317
Joined: Wed Aug 31, 2011 2:36 am

by savechief

Honestly, I get a little bit confused as to which SRAM cranks work with what. I'm looking for the lightest cranks I can find, so I'm assuming I want to get the Exogram arms. From what I understand, none of the cranks with the integrated spider will work because the spindle is too short for bb386evo. Is that correct? Will what I'm looking for have the 3-bolt interface or the 8-bolt interface? Or possibly either, depending on which year I find?

If it helps, these would end up going on a Felt F3x cyclocross bike with a single narrow wide chainring.

Sent from my SM-G930V using Tapatalk

Time VXRS Ulteam (7.16 kg)
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by Weenie


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MayhemSWE
Posts: 203
Joined: Thu Mar 12, 2015 12:44 pm
Location: Stockholm, Sweden

by MayhemSWE

If you absolutely want the integrated spider, the Red GXP crank has a long enough axle but will obviously require an adapter or 24/22 mm bottom bracket.

If you decide to go for a Sram BB386 crank, the Red should have the new 8-bolt interface. They are only available in the very latest version with eTap graphics and should all be the same.

If you find a Quarq Prime crankset they should obviously all have the 8-bolt interface as well. From what I understand they are identical to Red power meter cranks in everything but graphics.

Whether Force for BB386 also has the 8-bolt interface I am not sure.

savechief
Posts: 317
Joined: Wed Aug 31, 2011 2:36 am

by savechief

Thanks, very helpful. Which cranks should I absolutely avoid buying (i.e. it's a dedicated BB30/PF30 crankset and the spindle will be too short)?
Time VXRS Ulteam (7.16 kg)
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alcatraz
Posts: 1132
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

I saw somewhere that sram red exogram is 350-360gr in bb30 and 370-380gr in gxp. (Assuming you get the older exograms, newer are heavier - beefed up)

If you have a bb86 prssfit frame then just get a light gxp bottom bracket. They come as low as 50-60gr.

For bb386 your lightest option might be fsa sl-k or k-force.

The sram 386 cranks with removable spider are quite heavy relatively speaking.

/a

glepore
Posts: 1144
Joined: Thu Mar 28, 2013 4:42 pm
Location: Pa USA

by glepore

Not veer off topic, but god I hate this stuff. WAY too much diversity/complication out there.
Cysco Ti custom Campy SR mechanical (6.9);Cannondale SS Evo Di2 7970 (5.79); Willier Cento Uno Air Di2 9070 (7.0); C40 Mk2 DA 7800 ; Anvil Custom steel Etap;1996 Colnago Technos Record

by Weenie


jbattermann
Posts: 14
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

savechief wrote:
Tue Mar 13, 2018 5:27 pm
Honestly, I get a little bit confused as to which SRAM cranks work with what. I'm looking for the lightest cranks I can find, so I'm assuming I want to get the Exogram arms. From what I understand, none of the cranks with the integrated spider will work because the spindle is too short for bb386evo. Is that correct? Will what I'm looking for have the 3-bolt interface or the 8-bolt interface? Or possibly either, depending on which year I find?

If it helps, these would end up going on a Felt F3x cyclocross bike with a single narrow wide chainring.

Sent from my SM-G930V using Tapatalk

If you still need one, I got a barely used (<= 2 months) BB386 Sram Red eTap Crankset (52/36 & 172.5mm) lying around here. Used it in my BB386 frame which I sold again for various reasons.. so yeah. It's the native BB386 ("BB30 Wide") 00.6118.446.002 2017 model, bought on July 18th 2017 and only used for a dozen or two rides in August & September 2017.

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