Renthal 1XR 4-Arm 104BCD Chainrings Alternating 1.8 / 3.5mm width teeth. 7075 T6 aluminium. Superlight. 32t, 34t, 36t & 38t

1XR 4-Arm 104BCD ChainringsAlternating 1.8 / 3.5mm width teeth.7075 T6 aluminium. Superlight. 32t, 34t, 36t & 38t.
Ultimate chain retention. All conditions.The Renthal 1XR chainring tooth profiling ensures the highest level of chain retention, in all conditions. Alternating 1.8 / 3.5mm width teeth interlock with the chain for ultimate security, with no loss of efficiency. The reduced frontal profile of the 3.5mm wide teeth increases mud clearance for the inner chain plates and extends longevity. Durability of the hard wearing 7075 T6 aluminium construction is maximised with a hard anodised surface treatment and mud evacuation grooves in the tooth bed.Features:*Alternating 1.8 / 3.5mm width teeth. *CNC machined 7075 T6 Aluminum.*Hard anodized surface finish*Mud grooves in the tooth bed*Ultra stiff I-Beam cross section*Mud clearance and wear-proof profiling*104mm BCD.Sizes: 32, 34, 36 and 38tWeight: 32t 42g34t 46g36t 50g38t 54gFactory Jackson review: http://factoryjackson.com/2015/04/07/renthal-1xr-retainer-chainring-review/"Although it has been a while coming, Renthal's entrance to the narrow/wide retaining chain ring market is damned impressive. It's nice when companies take a step back to make a genuinely great product and now another great British company have cracked it again. Must be something in the water.""The Renthal 1XR chain ring is an absolute no brainer. Highly recommended."Dirt Rag review: http://dirtragmag.com/trail-tested-renthal-1xr-narrowwide-chainring/"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"."Renthal has created a winner with its 1XR ring: it has been working flawlessly".MBR Magazine Review:"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".

The Renthal 1XR chainring tooth profiling ensures the highest level of chain retention, in all conditions. Alternating width teeth interlock with the chain for ultimate security, with no loss of efficiency.

Intricate tooth profiling increases mud clearance and extends longevity.

The Renthal 1XR offers ultimate chain retention performance and market leading durability.

Wide Narrow

Alternating 1.8 / 3.5mm teeth interlock, in sequence, with the inner and outer links of 9, 10, 11 or 12 speed chain, to give the highest levels of chain retention and efficiency.

The tall, square tooth profile ensures the very high level of chain retention isn't reduced as the tooth face wears.

All Weather

Mud grooves, located in each tooth bed combined with ample clearance below the outer chain plates, allows dirt and mud to be purged clear of the drivetrain, improving performance and durability.

High Strength A CAD I-Beam cross section is utilised to give the maximum strength and stiffness, with the lowest possible weight.

CNC Machined

The 1XR is fully CNC machined from 7075 T6 aluminium alloy. Utilising CNC machining production allows accurate tooth face profiling and the maximum width contact area with the chain rollers, for greater longevity.

Ultra Durable

After CNC machining, the 1XR chainring is hard anodised to give an incredibly durable surface finish. The chainring is further enhanced with the application of a 3-D graphic in a CNC machined recess.