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S-Works TT

With our most advanced, wind tunnel developed, aerodynamics and ventilation, a removable shield and ultra-light construction, the S-Works TT is your best weapon for pure speed against the clock.

With our most advanced, wind tunnel developed, aerodynamics and ventilation, a removable shield and ultra-light construction, the S-Works TT is your best weapon for pure speed against the clock.

Helmet Size Chart

Model
Fit Size
Hat Size
Inch
Metric
Airnet
Small
6-3/8 -
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
Align
One Size
6 3/4-
7 3/4
21 1/4"-
24 1/2"
54-
62cm
Ambush / Ambush Comp
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 3/4-
7 1/4
21 1/4"-
23"
54-
58cm
Large
7 1/8-
7 5/8
22 1/2"-
24"
57-
61cm
X-Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
Aspire
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
Centro
One Size
6 3/4-
7 3/4
21 1/4"-
24 1/2"
54-
62cm
Chamonix
One Size
6 3/4-
7 3/4
21 1/4"-
24 1/2"
54-
62cm
Covert
Small
6 1/2-
7
20 1/2"-
22"
52-
56cm
Medium
7-
7 1/2
22"-
23 1/2"
56-
60cm
Large
7 1/2-
7 7/8
23 1/2"-
24 3/4"
60-
63cm
Covert Kids
X-Small
6-
6 5/8
18 1/2"-
20 3/4"
47-
53cm
Small
6 1/2-
7
20 1/2"-
22"
52-
56cm
Medium
7-
7 1/2
22"-
23 1/2"
56-
60cm
Dissident / Dissident Comp
Small
6 3/4-
6 7/8
21 1/4"-
21 3/4"
54-
55cm
Medium
7-
7 1/8
22"-
22 1/2"
56-
57cm
Large
7 1/4-
7 3/8
22 5/8"-
23"
58-
59cm
X-Large
7 1/2-
7 3/4
23 1/2"-
24 1/4"
60-
62cm
Duet
One Size
6 1/4-
7 1/4
19 3/4"-
23"
50-
58cm
Echelon
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
Evade / Evade Tri
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
Flash
One Size
6 1/4-
7 1/4
19 3/4"-
23"
50-
58cm
Flash
One Size
7-
8
22"-
25 1/4"
56-
64cm
Mio
One Size
< 6-
6 3/8
18"-
20"
46-
51cm
Prevail
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
Propero 3
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
S-Works TT
X-Small/Small
6 3/8-
7 1/8
20"-
22 1/2"
51-
57cm
Medium/Large
6 3/4-
7 1/2
21 1/4"-
23 1/2"
54-
60cm
Sierra
One Size
6 1/4-
7 1/4
19 3/4"-
23"
50-
58cm
Shuffle Child
One Size
6 1/4-
6 7/8
19 3/4"-
21 3/4"
50-
55cm
Shuffle Youth
One Size
6 1/2-
7 1/8
20 1/2"-
22 1/2"
52-
57cm
Small Fry Child
One Size
< 6-
6 7/8
18 1/2"-
21 3/4"
47-
55cm
Small Fry Toddler
One Size
< 6-
6 1/2
17 1/2"-
20 1/2"
44-
52cm
Tactic
Small
6 3/8-
7
20"-
22"
51-
56cm
Medium
6 7/8-
7 3/8
21 3/4"-
23 1/4"
55-
59cm
Large
7 3/8-
7 7/8
23 1/4"-
24 3/4"
59-
63cm
With our most advanced Win-Tunnel-developed aerodynamics and ventilation, a removable shield, and ultra-light construction, the S-Works TT helmet is your best weapon for pure speed against the clock.
  • Advanced, wind-tunnel-developed aerodynamics and ventilation save 62 seconds over 40km compared to a standard road helmet.
  • Patented Energy Optimized Multi-Density EPS construction helps to manage impact energy.
  • Ultra-light Mindset micro-dial fit system with height adjustability for the perfect fit.
  • Innovative Gill Vent design improves airflow and reduces drag.
  • Removable Shield has a robust snap fit and comes with both clear and smoked tints.
  • Thin, soft, and lightweight 4X DryLite webbing won’t stretch out with sweat or water.
  • Tri-Fix web splitter for improved comfort and ease of strap adjustments.
  • Instrap webbing system for ultra-light construction and security.
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S-Works TT

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