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Trek Speed Concept Project One Medium Triathlon Bike
Product Details
Used Trek Speed Concept Project One 

Medium
Shimano Ultegra mechanical shifting
11 speed 
90mm carbon front wheel with Flo carbon disc rear wheel
Easily adjustable carbon cockpit

Professionally tuned up -- structurally and mechanically sound
Care & Maintenance

Used bikes should be handled with care to maintain performance and safety: avoid over-tightening bolts (use a torque wrench), inspect the frame regularly for cracks or damage, clean gently with mild soap and water, keep the chain lubricated, and get an annual tune-up to catch wear and ensure safe performance.

Size & Fit

This sizing guide offers a general starting point based on rider height. Since body proportions and frame geometries vary by brand, use it only as a reference — for the best fit, check specific brand charts or consult a bike fitter.

5'0" - 5'2"

  • 47-49cm (XXS/XS)

5'2" - 5'4"

  • 50/51cm (XS)

5'4" - 5'6"

  • 52cm (XS/S)

5'6" - 5'9"

  • 54/55cm (S)

5'9" - 5'11"

  • 56cm (M)

5'11" - 6'1"

  • 58cm (M/L)

6'1" - 6'3"

  • 60cm (L)

6'3" - 6'5"

  • 61/62cm (L/XL)

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