Just In – Race Face Narrow Wide Chainring

by Brian Mullin on May 22, 2014

The
Race Face 1x chainrings utilize a narrow wide tooth profile, and they
have a stiff 4mm plate thickness with an I-beam construction to help
transfer loads without any flexing. They’re built from 7075 aluminum, and
the narrow wide tooth profile enhances chain retention on the ring, so
there isn’t a need for a chain guide.

The 104 bcd chainrings are
compatible with 10 and 11-speed drivetrain’s, and come in 30, 32, 34,
36, 38 tooth sizes, and retail from $49.99 to $59.99.

Their
30-tooth chainring has a 104 BCD and has a built-in threaded spacer that
accepts standard chainring bolts, and this design means the chain doesn’t
interfere with the crank’s spider. The CNC ramping work on the chainring is really well done and appears to have a lot of precision workmanship.

Features

  • Narrow Wide tooth profiling ensures ultimate chain retention
  • Stiff 4mm plate thickness and I-beam construction transfer loads without flexing
  • 7075-T6 aluminum, aerospace grade strength
  • Reversible laser etched graphics
  • Compatible for 9, 10 and 11 speed

Impressions

I
installed their 30t chainring on my e*thirteen TRS+ cranks on my Ibis
Ripley 29er. It was easy to attach the chainring onto the spider, and
the chainring bolts screwed in nicely to the built-in threaded spacers.
It was tough to finagle the chainring up and over the pedals for the
installation, but I managed with a bit of finesse. The spacer distance
worked out perfect on the spider with my 1×10 (11-42) arrangement, and I
had no interference issues between the chain and spider. Refer to my Wolf Components 42t and OneUp 42t cassette adapter articles for further information on the 10-speed 11-42 setup and testing.

The
chain wrapped around smoothly, and I didn’t feel any binding or teething
issues. Even during hard pedaling at extremely low torque, everything
worked like a charm. I liked the gear ratio’s that I was now getting on my
Ripley with this 30t x 11-42, and I especially enjoyed the .714 of the
30×42 granny gearing.

I have bashed it though some ugly terrain at
Sedona and most of my local haunts, and I haven’t suffered any dropped
chains or misalignment, shifting and teething issues.    

Specs:

  • 104 BCD (4 bolt) 30, 32, 34, 36, 38 – Red, Green, Blue, Black, Orange, Purple
  • 110 BCD (5 bolt) 38, 40, 42 – Black
  • 130 BCD (5 bolt) 40, 42, 44 – Black

More info: www.raceface.com

{ 1 comment… read it below or add one }

Anonymous July 28, 2014 at 6:43 pm

I run a single 36 tooth RF ring on a 9 speed with BCD104 and it works flawlessly

Simon

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