Weaknesses: Very poor shifting on 10 speed dynasys system. "Hang" between the outer and mid chain ring and had very often chainsuck on the 10 speed system. Contacted Blackspire but they wouldn't listen. Came with facts that the teeth's of original 10 speed chain rings are smaller but didn't listen to that.
If you are still with a 9 speed mtb no problems at all. If you use 10 speed gear don't by it! TA and other manufactures made original 10 speed rings and not the combined 9/10 speed which the blackspire is. It shifts horrible on a 10 speed gear bike. Also customer support is worse.
Bought these chainrings to modify my Jet9 from a 1x10 to a 2x10 using an older Shimano XT 9 speed triple crankset. Installation was simple and the rings fit perfectly. Durability seems to be good. The anodizing wears off the teeth quickly but I don't mind. Shifting is nice and smooth. I had some chainsuck issues but it was my fault and not chainring incompatibility. Since I've fixed adjusted my setup, shifting has been great. I highly recommend these chainrings.
from Haverhill, MA, USA
Date Reviewed: July 12, 2011
Strengths: The Blackspire Super Pro offered the correct bolt circle to fit my Raceface Deus crank set 104/64 in 32/22 teeth
Weaknesses: Poor shifting quality. The chain drops off the middle ring to the granny ring with a clunck when shifted. Adjustment could not smooth it out. Also you must make approximately a 120 degree rotation before the chain moves down. To much for my liking. Up shifts to the middle ring clatter. This is definately not on par with Raceface rings. The base material for the granny ring is thicker than a Raceface ring though the counter bores for the ring bolts are similiar in depth. The result is that the granny chainring bolts are more inboard and interfere with the lower pivot bolt on my Intense 6.6. This is really bad!!!
These rings are a good stop gap product if you can not locate the real deal Raceface chainrings but dont expect the identical performance. These babys fall short in all respects. 4F Form, Fit, Function the big F for failure.
Similar Products Used: Raceface Deus w/Race Rings, and Raceface Turbine rings and in my ealier days shimano XT
Bike Setup: Intense 6.6, MRP LRP, 36mm Talas 160 RC2, Raceface Deus, Crank brothers eggbeaters, WTB Velociraptors currently, Sram 990; 991, X.0 deraileurs and shifters, Juciy Carbons, carbon bar and seat post, Havoc AM wheels
a Weekend Warrior
from Winchester, MA, USA
Date Reviewed: May 16, 2011
Strengths: Quality manufacturing, tough and takes a hit.
I bought a 24 and 34 Super Pro to set up a 2x9 with a XT 770 crankset. I have 9 speed XT derailleurs and chain. This shifts beautifully and dependably; far better than the stock XT rings I had before. Before I got a chainguard I whacked a few rocks and the rings took the hits without a problem. I'm a believer! I think the naysayers just don't know how to set up a bike and understand compatibility.
Similar Products Used: Raceface, Shimano, FSA, Blackspire, Cycle Dynamics, etc.
a Cross Country Rider
from Kauai, HI
Date Reviewed: December 12, 2009
Strengths: The box they come in is recyclable.
Weaknesses: Shifts like a senile grandmother with Parkinsons. Wears out like your sister on prom night.
Even when brand new these things shifted poorly (amazingly slow engagement). I don't know why I lived with them for a few months but after only about 800 miles of fairly hard mtb and some road riding, the middle and smalls rings are shark-toothed and done. I replaced the chain at the same time as these rings, and I never run a chain wear with excessive stretch.
I also keep my drivetrain clean. The fault with this early wear and weak shifting lies solely with whatever cheap metal or process blackspire uses. Never have I given 1 chile, but never before have I had such a crap component. You could get these for $20 and they'd still get 1 chile for value. Awful!
I put about 2'500 miles a year on my bike, commute to work all year in rainy Seattle, and race this bike in both cross country mountain and cyclocross mudfest races. This chain ring had barely noticeable wear after 1 year of hard use. Fantastic product. No shifting issues.
a Cross Country Rider
from Winnipeg Canada
Date Reviewed: June 2, 2008
Strengths: strong, light, durable
Weaknesses: doesn't shift on my bike
I bought a 104-32 (middle) Blackspire SuperPro to replace my wearing XT one. I replaced the chain at the same time with a top-of-the-line SRAM PC-991. My front der is a 2006 XT.
I tested it on my street. 100% of middle->small downshifts chattered and stalled for 3 or four full revolutions before shifting down, and 30% of them dropped right down to the bike frame. Half an hour of front der cable tension and limit adjustments yielded equal or worse (100% dropping) results. Small->middle upshifts always were perfect.
I put my wearing chain and XT chainring back on, and 98% of the middle->small downshifts were instantaneous and perfect, as were the small->middle upshifts.
Bike Setup: 2000 Trek 8500 with 2006 XT front der and new SRAM PC-991 chain
a Cross Country Rider
Date Reviewed: February 19, 2008
Strengths: shifts well, durable, significantly under the price of the Shimano replacement rings
Weaknesses: If you are overly concerned with counting grams, these may be a little heavier than Shimano, but I'm not sure. It just feels thicker.
Cant say anything about small or big ring Blackspires but the 32 tooth (middle) rings are working great for me. Im roaching the XTR 960 middle rings in less than 4 months. Been riding these for 3 months and I can hardly tell they have been used. I have not noticed any decline in shifting performance.
Weaknesses: performance slightly below original shimano.
In my opinion, these are the best replacement rings for shimanos. With XT rings, i've experienced some chainsuck, hence the replacements. Since then, no more problems, no matter how much mud they got on them. I use them in conjunction with XT cranks, HG 93 or CN 7701 chain, and XTR front derailleur. I use the large en middle ring, since i hardly use my granny. Shifting performance is slightly below XT rings, say 5 percent less, but they outperform shimano in workmanship, finish and durability. If you are looking for a good alternative for shimano rings, this is your best bet.
Similar Products Used: XT and other shimano stuff.
a Weekend Warrior
from Long Island, NY USA
Date Reviewed: December 27, 2006
Strengths: sweet looking
Weaknesses: crappy shifting, dropped chains
i really wanted to like these. they look sweet in all black machined finish, they're NOT shimano, but they simply dont shift that well. and i use all my rings it wasnt the setup either. in three consecutive weekends i had violent chain droppages and skips during jumps and wheelie drops leaving me with bloody knees and no confidence in my drivetrain. I'm switching back to Shimano just to confirm my suspisions.
from Plattsburgh, NY
Date Reviewed: September 12, 2004
Strengths: Bought a whole set for my 751 XT cranks. I have immediately noticed improved performance. Less flex and noticebly smoother shifting than XT replacements that I have bought (I have been through 3 middle rings this season) Hopefully they are as durable as others have claimed. They look good
Weaknesses: none so far
So far far superior performance, obviously will need time to tell on durability. I am a strong, low cadence at times, ring bending racer and these are noticibly stiffer than XT.
a Cross Country Rider
Date Reviewed: May 4, 2004
Strengths: i honestly cantremember howmuch i paid 4 these, they were priced in line with raceface. They are great shifting and last a real long time. After one year they still have alot of life left to them and are shifting consistantly
Weaknesses: i cant think of any...the small ring was machined for an 8 speed drivetrain, i ofcourse got horrible chainsuck,after calling them they replaced it immediatly, and were apologetic for the mistake, those polite Canadians...such a nice change from the arrogant cali attitudes i get so tired of.
some people were b1tching about the finish wearing off and other silly crap, get over it, this is a wear item, that means IT WILL NOT BE PRETTY FOREVER (personally im suspect of any mtnbike thats too clean or new looking, u know why)These rings have taken alot of real world abuse...log crossongs, rocks, snow, mud, sand, anything u can think of, and alot of it, i ride year around, and in season do 60 to 100 mi per week. I like these rings and thay have never let me down.
Similar Products Used: shimano, raceface, real(crap)!
Bike Setup: yes, infact i'm riding today, thanx for asking.
a Weekend Warrior
from Ottawa, Ontario, Canada
Date Reviewed: June 1, 2003
Strengths: Well, to be honest I dont know. It shifts, it doesnt bend, and it looks cool. I dont know what more to ask for out of a chainring. Its not like it will dice, slice, chop, and blend....Jeese I'm hungry
I would like to ask you, if you have used and know more about the BlackSpire Super Pro Chainrings.
I have a XTR Crankset converted for 2 rings with Specialites chainrings and the inner is too used for a new chain.
If I'll change it with BlackSpire is it ok? Did anyone tried it?
Th ... Read More »
I like to run a 2x9 setup with 26 or 27T Inner and 38T Outer chain rings on my 29er.
I am looking for a clean and quality setup with good chain line. Here are a couple of options I am looking at. Does anyone have experience with either? Please help.
A) Middleburn RS7 Duo cranks with Phi ... Read More »
[B]SCAM[/B] inside beware! Not legitimate store.
Super cheap Gary Fisher Hifi Pro 29er 2009 $ 1040.00
[b]DO NOT[/b] Enjoy&Cheers!
DCRead More »
Are there any other chainrings to consider? I see the shifting performance on the blackspire rings seem to vary from great to terrible. I'm planning on switching my Noir cranks to a 2x9 24/36 combo, so I will want the rings to be ramped.Read More »