Unior Pro truing stand
Unior

Unior Pro truing stand

In Stock

Heavy-duty Unior Pro truing stand for 16–29" wheels and hubs up to 157mm. Dual calipers with plastic-coated tips and spring‑loaded arms deliver fast, scratch-free wheel tuning.

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Product Details

Overview & Technology

Precision shop truing for every wheel. The Unior Pro Truing Stand (PN 902548 / MPN 629297) is a workshop-grade tool built to handle wheels from 16" to 29" — with or without tire — and hubs up to 157 mm wide. Its robust frame and well-balanced support system give a stable reference so you can correct radial and lateral runout with confidence. Engineered for repeatable accuracy, the stand uses twin calipers that enable simultaneous radial checks on both sides of the rim and an additional adjustment to verify symmetry relative to the hub. Caliper tips are plastic-coated to protect rim finishes, and the upright arms plus the caliper arm are spring-loaded for quick wheel swaps — pull them out and they snap back to a preset position when a new wheel is inserted.

Key Features

Designed for real-world workshop use. The Unior Pro stand combines user-friendly mechanics with durable construction: heavy-gauge frame, precision mounting points and a finish that resists shop wear. Calipers provide fine, reliable feedback so you can see tiny corrections while you true spokes. • Accepts 16"–29" wheels — works with tyres mounted • Supports hubs up to 157 mm; additional adaptors required for 20 mm axles • Dual calipers for simultaneous radial control and hub-referenced symmetry checks • Plastic-coated caliper tips prevent rim scratching • Spring-loaded upright and caliper arms for quick wheel changes

Fit & Compatibility

The stand accepts the majority of bicycle wheels commonly found across disciplines: 16" kid wheels through 29" adult wheels (road and MTB). It supports hub widths to 157 mm which covers boost and many thru-axle standards. Note: trueing wheels with 20 mm or other specialized axles will require Unior adaptors to secure the axle properly. Because the calipers work with the rim surface, you can true wheels with tyres mounted, and the coated tips protect alloy and painted rims. If you plan to work frequently on fat-bike or extremely wide custom axles, check for adaptor availability before purchase.

Who it's for

Shop techs, home mechanics and bike shops who want a reliable, fast and accurate truing platform. This stand is ideal for mountain and mixed-discipline mechanics who service 29" and boost wheels regularly and need a tough, repeatable tool that speeds up routine maintenance. Home mechanics who want a professional-level setup will appreciate the spring-loaded arms and dual-caliper design that make wheel changes and symmetry checks quicker and less fiddly than simpler single-caliper stands.

Key Features

  • ✓ Accepts 16–29" wheels with or without tyre for versatile workshop use
  • ✓ Supports hubs up to 157 mm; adaptors needed for 20 mm axles
  • ✓ Dual calipers enable simultaneous radial control on both rim sides
  • ✓ Plastic-coated caliper tips prevent scratches on alloy or painted rims
  • ✓ Spring-loaded upright and caliper arms for quick wheel swaps
  • ✓ Stable, heavy-gauge frame for repeatable, shop-quality truing

Product Identifiers

Vendor Item # 629297
EAN 3838909292977

Frequently Asked Questions

Will this stand accept a thru‑axle wheel?

Yes — the Unior Pro accepts most thru-axle wheels when the hub width is 157 mm or less. For specific axle diameters like 20 mm you will need Unior adaptors to properly secure the axle before truing.

Can I true wheels with the tyre mounted?

Yes. The stand is designed to accommodate wheels with tyres installed, allowing you to check true under real-world conditions and avoid surprises after re-mounting tyres.

Will the calipers scratch my rims?

No — the caliper tips are plastic-coated to protect alloy, painted and carbon rims. They still provide accurate touch points while minimizing cosmetic damage.

Is assembly required and how heavy is the stand?

Some light assembly is required out of the box to attach arms and calipers. The assembled stand weighs about 18.8 lb, making it stable on a bench but still moveable if needed.

Can I use this to true disc brake rotors?

The stand is optimized for wheel rim truing. While you can use the calipers to assess rotor runout in a pinch, a dedicated rotor truing tool or rotor gauge offers finer control for brake rotor adjustments.

Does the stand handle very wide or fat-bike hubs?

The maximum supported hub width is 157 mm. Fat-bike hubs and some custom axle assemblies exceed that width and will not fit unless you have specific adaptors or a different mounting solution.

Buying Guide

Choose a truing stand that matches the wheels and axle standards you work on most. For everyday mountain and mixed-use wheel maintenance, prioritize stands that accept 29" wheels, support wide hub spacing (like 157 mm) and offer protected caliper tips to avoid rim damage. Consider whether you'll need adaptors for 20 mm or non-standard axles before purchasing. Also evaluate build quality and bench footprint: heavier, steel-framed stands provide a steadier reference for fine work, while spring-loaded arms and dual calipers speed up repeated jobs. If you service disc rotors frequently, budget for a dedicated rotor truing tool in addition to your wheel stand.

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