Alpha 400 Pro Wheelset

Alpha 400 Pro Wheelset

Photo Credit: Dan Steinle - Riders: Jennifer Nordhem
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priced from $460.00
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  • Reinforced internal arch creates the strongest possible road rim

  • Bead Socket Technology (BST-R) for superior tubeless performance

  • Neo Ultimate hubs accelerate quicker and last longer

  • Wide, low-profile rim design for better cornering and faster rolling

  • 33% thicker spoke bed than Alpha 340 rim for maximum durability

  • Compatible with Shimano and Campagnolo 9, 10, and 11-speed cassettes

  • Compatible with road tubeless-specific clinchers and conventional clinchers when used with tubes

  • 2 layers of 21mm yellow tape and 44 mm valves installed for tubeless use

Meet the ZTR Alpha 400, a rim that shares the same dimensions and Bead Socket Technology as the Alpha 340 but adds the triple channel and internal arch design of our nearly invincible Arch EX and Flow EX rims. The ZTR Alpha 400 offers a 33% thicker spoke bed than the original Alpha 340 rim for maximum durability.

The Alpha 400 Pro's Neo Ultimate hub features near instantaneous 5-degree engagement. Further machining of the Neo Ultimate's 100% CNC machined shell shaves additional weight. Neo hub includes larger bearings, and a stronger, stiffer, shoulderless axle that provides unmatched strength and reliability. Sapim's CX-Ray spokes are both light and exceptionally strong, while also being aerodynamic.

When combined with specific Road Tubeless tires, the Alpha offers a ride normally only found with tubular tires and rims, but maintains the simplicity and low maintenance of a clincher.  Light and fast on the outside, ultra-stiff and strong on the inside, the new ZTR Alpha 400 is the rim you've all been waiting for.

What’s Included:

Alpha 400 Wheelsets comes with pre-installed tape for tubeless use and presta valves.

Rim Internal Width: 17.0mm            Wheelset Weight: 1444g
Rim External Width: 20.0mm   Rim Weight: 425g
Rim Depth: 22.6mm   ERD: 592mm
Spokes: Sapim CX-Ray Black 2.0/(0.9x2.2)/2.0mm   ETRTO: 622x17
Nipples: Sapim Secure Lock Alloy Silver   ISO: 700cx20.0mm
Hub: Neo Ultimate with Durasync   Tape: 21mm (2x)
Hole Count: 18-hole, 24-hole   Valve: 44mm Presta
Rim Material: 6061 Aluminum Alloy   Max Spoke Tension: 125kgf (1225N)
Rim Color: Black   Max Pressure with 23mm Tire: 116psi
Hub Color: Black   Max Rider Weight: 230lbs (113 kilo)
Brakes: Rim Only    
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To submit a warranty claim outside the U.S., please contact your point of purchase or the authorized distributor within your country for the best service and support.

**Purchases made through eBay or similar resale sites are not supported under our warranty policy.**

Aluminum Rim Warranty and Crash Replacement Policy

Two Year Aluminum Rim Warranty

All Stan’s NoTubes Aluminum rims are covered under a 2 year warranty against manufacturing defects from the original purchase date. Warranty does not cover abuse, misuse, consequential damages, normal wear and tear, and improper installation. Warranties only apply to the original owner. If a product is found defective, the customer will receive, at the discretion of Stan’s NoTubes, free repair or replacement.

One Year Aluminum Rim Crash Replacement

Should you have the unfortunate experience of crashing and damaging your Stan’s NoTubes aluminum rims, we want nothing more than to help you get back on the bike as quickly as possible.  The Crash Replacement Policy covers the rims for a period of 1 year from the original purchase date against damage caused during normal operation of the bicycle, including racing.  Crash Replacement Pricing includes new rim, spokes, nipples, tape, and costs associated to build labor. 

Three Year Hub Warranty

All Stan’s NoTubes hubs are covered by a 3 year warranty against manufacturing defects. Warranty does not cover abuse, misuse, consequential damage resulting from incorrect or nonexistent maintenance, normal wear and tear, and improper installation. Warranties only apply to the original owner with valid sales receipt. If a product is found defective customer will receive, at the discretion of Stan’s NoTubes, free repair or replacement.

Warranty and Crash Replacement Conditions

  1. Warranty and crash replacement are valid only for the original owner and are not transferrable.

  2. Warranty does not cover the following:
    • Damage sustained during shipment.
    • Products on which serial numbers, production lot codes/date codes or other identifying marks have been removed.
    • Normal wear and tear, misuse, incorrect installation or improper maintenance, use of incompatible parts or components, accident or crash damage, negligence, modifications not recommended or approved by Stan’s NoTubes.
    • Shipping costs to Stan’s NoTubes or local distributor.
    • Instances determined to be cosmetic only.
    • Any representation or warranty expressed or implied by a third party beyond the provisions of this stated policy.


Stan’s Tubeless System provides you with the information and items you need to seal most tires and rims tubeless. When attempting this process, ride with caution the first initial rides to observe the reaction of your tires and rims. Due to the variety of tire and rim combinations, some may work much better than others. During your first few rides check your tire for leaking and correct air pressure. If your pressure drops too low there is a risk of the tire dismounting itself. The system allows the use of standard, tube-type tires, to be used in a tubeless manner. It should be noted that doing so exceeds the tire manufacturer’s original design intent and may void the tires warranty. Also, some tube and tubeless tires were not designed to be used with sealant and doing so may void the tire's warranty. Stan’s is not responsible for any damage to the tires and/or any injury or liability resulting from the use of a tire beyond the original design intent.

Our Technology

  • NEO


    Our entirely new Neo & Neo Ultimate hubs offer maximum durability, quicker engagement,& options to fit every axle standard.

    Learn More
  • BST-R


    BST-R rims offer maximum versatility with the widest range of tires and pressures. Compatible with 25mm to 32mm tires at pressures up to 115psi both with and without tubes, BST-R rims are also compatible with wider, higher-volume tubeless tires at pressures below 45psi.

    Learn More