NOTE: This is for SRAM cranks with M8.5 bolts which thread into the chainring itself. IT DOES NOT FIT OTHER SYSTEMS with 76BCD.
Alternating narrow-wide profile teeth help reduce sideways movement in rough terrain which normally derails chains. Complex precision machined debris gullies help evacuate mud for all weather performance superior to the competition.
A four bolt 76 PCD narrow-wide chainring designed to keep chains securely in place. Compatible with all 9, 10,11 or 12 speed chains, so virtually everything including the new SRAM EAGLE range. These chainrings are designed and CNC machined from 7075 T6 aluminium in our own facility in the UK. By manufacturing products with the highest quality machinery, we can offer market leading quality for amazing value and huge choice of fitment.
There is alot of marketing rubbish and myths about narrow wide rings but in effect they are quite simple. Chains are designed to have sideways movement in them to allow for shifting on a cassette, without this they wouldnt shift. If you are running a single ring on rough ground the chain whips around and can twist sideways enough to come off the ring while pedling. This is because the outer links of the chain leave a larger gap and allow the chain to twist off the ring further than a narrow link. A narrow wide ring has fatter teeth to correspond with the outer links which prevents this excess sideways movement, and therefore prevents the chain dropping off the ring.
This type of ring doesnt grip the chain, or prevent it jumping over the top of teeth, or other magical marketing claim! Tooth height and shape have no effect on performance as the chain only ever touches a small part of the ring - the bit which wears on the face of the tooth in an old ring.The biggest difference between brands is the complexity of the machining to clear mud and debris which causes wear and reliability problems. Our complex and market leading tooth profile ejects mud much more efficiently than our competitors, giving you superior performance in all weathers.
Do I need a chainguide or a clutch mech?
Not specifically, but for more intense riding styles you may want to add additional layers of security. Any chainguide requires sufficent clearance to cover at the largest point of the ring.
What is the offset of the ring and what chainline?
The offset of a ring is how much it is dished over from a standard flat chainring, it is used to achieve correct tyre/frame clearance and also to set the correct chainline. A standard chainring is 4mm thick with the teeth central to the ring, so a 8mm offset ring is 12mm thick and moves the teeth 8mm inboard of the standard position.
This moves your chainline to suit your requirements and crankset specification. Different cranksets are designed around different offset rings, we manufacture our rings to follow the manufacturers standard chainline/offset. It is possible to alter the chainline from standard but this can lead to clearance issues so we do not offer such parts.
Ive got Boost what offset do i need?
Boost rear hubs are 3mm per side wider than standard. Some manufacturers use a special Boost chainring to move the chainline outwards 3mm to match this, others use standard offset chainrings with a special Boost crank. You need to find out what crank offset type you have and choose the correct model ring to suit.
We offer Boost model chainrings to convert standard cranksets to Boost fitment. If you have Boost offset cranks you select our standard chainrings.
Which PCD do I require?
PCD is the diameter of the bolt pattern, and you need to match this with your crankset dimensions. There are lots of different standards so please dont guess, either measure or contact the crank manufacturer for information. Here is a brief list of common sizes:
64 BCD x4 - Common 4 bolt inner ring
76 BCD x4 Asymetric pattern M8.5 Thread - SRAM XX1
88 BCD x4 - XTR M985
94 BCD x4 - SRAM X01, X1 and GX
96 BCD x4 M8 thread - Some Shimano Triple
96 BCD x4 Asymetric pattern - New Shimano XT M8000, SLX M7000 etc
96 BCD x4 Asymetric pattern M7 thread - New Shimano XTR M9000 M9020
102 BCD x4 - XTR M960
104 BCD x4 - Common 4 bolt mountain bike size
110 BCD x5 - Road Compact
110 BCD x4 Asymetric pattern New Shimano Road Cranks
120 BCD x4 - some SRAM double cranks
130 BCD x5 - Road Standard
144 BCD x5 - Track Rings
Various direct mount spline types as well specific to manufacturer
Ultra lightweight components suitable for cross country racing only.
Lightweight parts suitable for off-road cross country riding.
Tough light to mid-weight components designed for off-road trail riding.
Sturdy components suitable for long off-road descents.
Ultra-tough components suitable for the harshest conditions and descents.
Suitable for 4 bolt 76mm BCD crankset with asymmetrical bolt hole pattern. Chainring bolts not included, just use suitable length bolts for your setup. The nut is built into the ring on some smaller models where standard bolts are not possible, standard bolt and nut is required for the rest.
Check out our new range of chainrings being CNC machined in our UK manufacturing facility. Get a close up view of our high speed aluminium CNC machining centre. Watch the chips fly while we dry machine this part so you can see the cutting in action. normally this would be done with plenty of coolant for longer tool life. This is the first operation of our Raptor ring range manufacturing process hogging out all the excess material to get weight down and make them look super slick.
When I came to fit it on my cranks I found that my existing chainring bolts were too small a diameter by fractions of a mm to do up in the self contained threads on the ring. I tried some E13 spares I'd got and even they were too small a diameter. Nothing on sales side of the site mentions you will need alternative single ring chainring bolts to mount this ring and for the money personally I th