Middleburn bicycle components, cranks, chainrings, hubs and accessories

XTR Chainrings

Inner 64pcd (XTR960, XTR970)
Middleburn XTR inner chainring are available in 22T only.
The inner ring has the same PCD as a standard 4-ARM inner but the offset is different (you can only fit the XTR one)
22T = CR9922HC (Hardcoat only)

Middle XTR960 102pcd Slickshift
Middleburn XTR960 Middle chainring is available in 32T only.
Slickshift means the chainring has ramps and pins to aid shifting.
The XTR960 has a unique bolt circle and no other ring options will fit.
32T = CR9932HC (Hardcoat only)

Middle XTR970 104pcd 88ID Slickshift
Middleburn Middle chainrings are available in a range of sizes.
The 88ID is the diameter of the shoulder on the spider that the chainring sits on to.
Slickshift means the chainring has ramps and pins to aid shifting.
The sizes available are 32T, 34T and 36T
32T = CR7732 (BK) (SI) (HC) (BL) (RE)
34T = CR7734 (BK) (SI) (HC)
36T = CR7736 (BK) (SI) (HC)
For full product codes add the finish colour after the code, for example: CR7732BK for 32T black.
(See fitment chart for your crank)

Outer XTR960 146pcd Slickshift
Middleburn XTR960 outer chainring are available in 44T only.
Slickshift means the chainring has ramps and pins to aid shifting.
The XTR960 has a unique bolt circle and no other ring options will fit.
44T = CR9944HC (Hardcoat only)

Outer XTR970 104pcd Slickshift
Middleburn XTR970 outer chainring are available in 44T only.
Slickshift means the chainring has ramps and pins to aid shifting.
The XTR970 chainring is 7mm thick and has been machined to blend in with the crank arms.
The offset is different to a Slickshift 4-ARM chainring.
44T = CR97044HC (Hardcoat only)

Black = BK
Silver = SI
Hardcoat = HC
Red = RE
Blue = BL