Zero TR Hardtail

Our fast and light trail hardtail that’s not afraid of the steep stuff. 6061-T6 Aluminium frame that weighs in at a frisky 1800g (size medium). Slack front end, long top tube, long chainstays and low bottom bracket make this hardtail climb hills like no other. Of course, the magic happens when the gradient turns negative, feel the perfect balance of the Zero TR thread your way though singletrack like never before.

Tapered head tube, 27.5″ wheels, threaded 73mm bottom bracket, 142×12 rear axle, full external cable and stealth dropper post routing

Size Chart:

This table is for guidance and is based around a 50mm stem. Larger or Smaller frames can be suitable depending on stem length and riding style. If in doubt, a good guide is to find the ETT (effective top tube, or horizontal top tube) of a frame that you are comfortable riding, and add the stem length to this number (for example, 600+60 = 660). Compare this to the ETT + stem of the Bird frame that you are considering. Feel free to call us for more detailed sizing advice.

Frame Size

Size > XS S M L XL
Min Height (Imperial) – 5’3″ 5’6″ 5’10” 6’1″
Max Height (imperial) 5’5″ 5’8″ 5’10” 6’4″ –
Min Height (Metric) – 160cm 168cm 178cm 185cm
Max Height (Metric) 165cm 173cm 178cm 193cm –

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