Bike components » Actiontec 20 tooth chainring
Titanium Chain Rings
Our Chain Rings are CNC laser cut from .115″ thick 8/11 titanium alloy, then CNC machined to .071″ thick at the tooth area, spot faced and hand finished to a brilliant silver nickel finish. They weigh nearly the same as an aluminum CR, but will last 5 times longer. The machined edges stay sharp to ensure quick shifts and promote long chain life. Weight: 18 gr – 96 gr.
Available in 20 tooth, even for 4 bolt 64mm BCD cranks (e.g. any Shimano crank in the last ~4 years)
Product website: http://www.actiontec.us/ti&steel.htm
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(9 votes, average: 3.44 out of 5)
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November 16th, 2008 in
Bike components
This looks tempting for my 29er. They have 3 options: a heat treated titanium for $75, a regular titanium for $45, and a stainless steal for $7.50…$7.50 sounds pretty good. Anyone have any info on the differance other than price?
I have the regular titanium version, in 20 tooth 4 bolt. The advantage of the ti version is, as Russ at actiontec told me on the phone, “it’ll outlast your bike.” That’s turned out to be true — I’ve had mine for about 4 years now, and it still doesn’t show much sign of wear.
$7.50 is a steal [sic] for steel, though. That’s in the 4 bolt pattern? I might find that hard to pass up — little rings do last a long time anyway.
On the most recent crankset (’08 XT) I had to dremel down the crank a bit to prevent the chain from contacting the crank. It was unusable until I did this (chain falling of). But it didn’t take much grinding to allow the chain to sink fully into the teeth.
I live in Whistler… the 20 tooth ring , is a great bail out gear … and it is very durable. In fact it is going on my new bike for this year…..
LP, do you have the titanium or stainless ring?
i got the TI version and had quite a hard time spacing it just right to get shifting to work. then i found out that some of the teeth were not cut right. had to send it back twice and finally got one that was cut correctly.
since then i switched back to a XTR 22t, just don’t need it on my 29er even loaded up