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The Lucky Jack Ultra is the rim of the weight-weenies! This is the ultimate weapon to lighten your mountain bike, recommended for XC light and non-committal use, it will be able to cope with most situations.

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Variantes disponibles
1365 g +/- 30 g
€1,728.40 Tax included

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Sapim Spokes

Sapim is THE brand of spokes, made in Belgium since 1918. Several models of spokes are available, within the limits of compatibility with the practice and the chosen rim:
  • Sapim CX-Ray: flat spoke, very light, durable, aero and very dynamic (309g / 64 pcs / 292mm)
  • Sapim CX-Sprint: Flat spoke identical to the CX-Ray but thicker for even more rigidity (373g / 64pcs / 292mm)
  • Sapim D-Light: round spoke, light and durable, with a 1.65mm diameter central part, good value for money (344g / 64 pcs / 292mm)
  • Sapim Race: round, sturdy and rigid spoke with a 1.8mm diameter central part (408g / 64 pcs / 292mm)


Aluminium nipples with locking thread, available in 16 colours: black, red, silver, metal grey, blue, aqua blue, gold, light gold, dark green, mint syrup green, lime green, lilac, pink, fuchsia pink, orange and oil slick.


The wheels are delivered assembled with valves and rim tape fitted, four spare spokes and nipples and an assembly certificate.

All Duke by JPRACINGBIKE1 wheels are assembled by hand in Vendée, France.


Crash replacement

We offer a crash replacement programme for carbon wheels. In case of accidents or heavy falls, violent shocks can damage your rim and make it impossible to use. With our Crash Replacement offer we offer you a service that allows you to replace your rim under special conditions: You get a 50 percent discount on the price of the rim (UD SLS carbon) 40 percent (3k Carbon), as well as the parts and the disassembly/reassembly. This offer is valid (for life) for an unlimited period of time for DUKE carbon rims and is transferable in the event of sale of the wheels to a third party.


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