It took a while but the 1XR is superb quality and great value. If it lasts as long as the non-narrow/wide Renthal SR4 ring, it could easily be the number one choice for UK conditions.
I set my 1XR ring up on a SRAM 1x11drivetrain with a 104 mm BCD Shimano crank. During an excessively muddy and snowy winter on the East Coast my Renthal ring saw plenty of thick muck and it never failed. Not once.
My rear derailleur could gunk up and the pulleys clog but the ring never seemed to notice it was muddy out. Obviously on dry trails as spring sprung the ring retained the chain perfectly.
I’ll also add that the vain side of me loves the gold color and styling of the ring.
Renthal has created a winner with its 1XR ring: it’s been working flawlessly.
If you’re running a 1x system with no chain retention device in any climate it’s a solid choice from a proven company.
And, being that Renthal is located in Bredbury, England, which is muddy about 75-percent of the year, it’s no surprise they know how to make a product that works in all conditions.
Although it’s been a while coming, Renthal’s entrance to the narrow/wide retaining chain ring market is damed impressive.
It’s nice when companies take a step back to make a genuinely great product.
There are three noticeable differences compared to other narrow/wide chainrings we’ve seen:
1. The machined channel of the narrow teeth extends further down, so mud holding on the shoulder won’t affect the chain, or build up enough to lift the chain and de-rail it.
2. In each tooth bed, Renthal has machined an angled clearing groove, so mud is purged down and out whilst the chain ring rotates.
3. The shape of the wide teeth have a profile that allows the ring to wear for longer before being replaced. When chainrings wear, the chain plates rub on the chainring tooth face as well as the rollers – this increases wear on both chain and chain ring, and adds friction. Renthal has machined the wide teeth so this doesn’t occur until the chainring is so worn that it will need replacing anyway.
The Renthal 1XR chain ring is an absolute no brainer. Highly recommended.