Middleburn RS7 X-Type (BB Width 68-73)

Middleburn RS7 X-Type (BB Width 68-73)

$425.00

Middleburn RS7-X Type cranks come complete with the axle, axle nuts and fittings. The RS7 cranks are for use in the external bottom bracket. The weight of the RS7-X-175 cranks are approximately 547g including all fittings. Q factor is approximately 182mm.

All our X Type cranks are fitted with a 24mm axle which works on any Hollow Tech 2 style Bottom Bracket.

The RS7 X type are ideal for when you need a bit more clearance from your stays especially on Fat Bikes but also any modern MTB as well. They have the well respected profile of the RS7 SQ cranks but with the 24mm axle for fitting in HollowTech2 bottom brackets

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Middleburn RS7-X Type cranks come complete with the axle, axle nuts and fittings. The RS7 cranks are for use in the external bottom bracket. The weight of the RS7-X-175 cranks are approximately 547g including all fittings. Q factor is approximately 182mm.

All our X Type cranks are fitted with a 24mm axle which works on any Hollow Tech 2 style Bottom Bracket.

The RS7 X type are ideal for when you need a bit more clearance from your stays especially on Fat Bikes but also any modern MTB as well. They have the well respected profile of the RS7 SQ cranks but with the 24mm axle for fitting in HollowTech2 bottom brackets

Middleburn cranks were first developed in 1991 and since then the cranks have undergone many refinements. This is our latest mountain bike crank which is designed to work with the external bottom brackets with a 24mm axle but also with push-fit type bottom brackets with the use of a different axle length supplied. The design is the result of advanced 3D and stress modelling technique that ensures they are amongst the stiffest cranks on the market but also lightweight.

The cranks are hot forged from high quality 7075 T6 aluminium. They then go through a CNC machined process and are then hand polished followed by anodised before being re-machined with the Middleburn logo. All cranks go through the same procedure so whichever crank arm you choose will be to the best quality.

We are often asked what is the difference between the RS8 X Type and the RS7 X Type and the answer lies in the forging really. The RS8 have a straight blade type arm whereas the RS7 X Type have the kinked out arm which offers increased clearance on the rear chainstays and a slightly wider Q factor. The axles fitted do differ too and the RS8 X Type cranks can be fitted to bikes with different bottom bracket widths (68/73 or 83 or 100mm) whereas the RS7 X Type only work on the 68/73 bb shell currently.

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