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Item # SRM0401

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Item # SRM0401

Description

Inherently stiffer and lighter due to shorter spokes and a smaller-diameter rim, 26in wheels are superior in terms of strength and weight. 29ers however, have their proven benefits -- such as approach angle and momentum retention -- that many have found to outweigh their smaller brethrens' advantages. Modern designs like the SRAM Rise 40 29in Wheelset cut as much weight as possible, while enhancing strength and stiffness to effectively optimize 29er performance and reduce any disadvantage vis-a-vis 26-inch wheels.

SRAM jumped on the fast track to providing performance wheels when it acquired Zipp Speed Weaponry, a longtime (20 plus years) composite component and wheel specialty manufacturing company. This provided SRAM with the expertise to not just enter the wheelset market, but allowed it to offer significantly advanced, highly developed products. By drawing on Zipp's wealth of wheel expertise, SRAM's 29er wheels offer industry-leading performance.

The Rise 40 is aimed at the mainstream mountain bike market, leaving race duty to the money-is-no-object Rise 60 Carbon wheelset. SRAM balanced the Rise 40's elements to favor strength, performance, and reliability so it'd appeal to both cross-country and all-mountain applications. One key feature to the Rise 40's strength is its asymmetric double-wall alloy rim. This shape allows SRAM to use near equal length spokes, creating a stronger complete structure.

The Rise 40 uses stainless steel bladed spokes that are laced in a 24 count, two-cross pattern both front and rear. This pattern keeps weight down and ensures optimum stiffness to resist wheel deflection. They're also a straight pull design, so there's no stress-prone bends -- like traditional spokes. These aerodynamic spokes are side-loaded into the hub flange, making replacement quick and easy.

The hub shell and freehub body's made of lightweight 6000 series aluminum, and it houses sealed cartridge bearings for maximum performance and minimum maintenance. The rear hub uses four bearings like the Rise 60, but it has a steel freehub body instead of an aluminum one for heavier-duty use. A 54-tooth drive ring gives just under seven degrees of engagement, while three pawls with a saw-tooth profile offers nine points of purchase. This makes ratcheting through technical sections easier and gives the Rise 40 instant response when you turn on the power.

These wheels are available with standard quick releases. While they're not tubeless compatible, the Rise 40 rims work great with rubber rim strip conversions like Stan's No Tubes Tubeless System. The Rise 40 29in Wheelset is compatible with six-bolt rotors and Shimano or SRAM cassettes.

Tech Specs

Material:
aluminum
Front Hub:
SRAM
Rear Hub:
SRAM
Spokes:
straight pull, bladed
Skewers:
included (when applicable)
Axle Type:
[front] quick-release, 15 mm thru-axle, [rear] 10x135 mm quick-release, 12x142 mm quick-release
Brake Compatibility:
disc
Rotor Compatibility:
6-bolt
Wheelbag:
no
Recommended Use:
cross country, trail riding
Manufacturer Warranty:
2 years

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SRAM Rise 40 29in Wheelset

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