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Radar Ski Size Chart

All sizing provided by manufacturer, contact us with any questions!

Whether you're skiing open water with the family or chasing buoys on the course, having the right sized ski will make or break the whole experience. Take a look at the size chart for the ski that best fits your needs. If you have any questions, or need some assistance in choosing a water stick don't hesitate to contact us!

Title
Size
Surface Area
Max Width
Max Speed
Terrain
Rider Weight
Men's Butterknife
69”
449.24 sq. in.
8.02”
30 MPH
Open Water
175-230 lbs.
Men's Butterknife
71”
462.27 sq. in.
7.02”
30 MPH
Open Water
220+ lbs.
Women's Butterknife
65”
398.67 sq. in.
7.55”
30 MPH
Open Water
Up to 160 lbs.
Women's Butterknife
67”
423.58 sq. in.
7.78”
30 MPH
Open Water
130-190 lbs.
Graviton
41”
407.55 sq. in.
10.982”
24 MPH
Competition
Up to 140 lbs.
Graviton
42”
427.68 sq. in.
11.250”
24 MPH
Competition
130-170 lbs.
Graviton
43”
448.28 sq. in.
11.518”
24 MPH
Competition
160-220 lbs.
Vapor Pro Build
63.5”
336.21 sq. in.
6.73”
36 MPH
Course
85-125 lbs
Vapor Pro Build
65”
344.15 sq. in.
6.73”
36 MPH
Course
110-145 lbs
Vapor Pro Build
66”
354.08 sq. in.
6.84”
36 MPH
Course
125-180 lbs.
Vapor Pro Build
67”
365.66 sq. in.
6.94”
36 MPH
Course
160-200 lbs.
Vapor Pro Build
68”
376.65 sq. in.
7.05”
36 MPH
Course
180-220 lbs.
Vapor Pro Build
69.5”
393.45 sq. in.
7.20”
36 MPH
Course
200+ lbs.
Vapor Lithium
63.5”
336.21 sq. in.
6.73”
36 MPH
Course
85-125 lbs
Vapor Lithium
65”
344.15 sq. in.
6.73”
36 MPH
Course
110-145 lbs
Vapor Lithium
66”
354.08 sq. in.
6.84”
36 MPH
Course
125-180 lbs.
Vapor Lithium
67”
365.66 sq. in.
6.94”
36 MPH
Course
160-200 lbs.
Vapor Lithium
68”
376.65 sq. in.
7.05”
36 MPH
Course
180-220 lbs.
Vapor Lithium
69.5”
393.45 sq. in.
7.20”
36 MPH
Course
200+ lbs.
Vapor Graphite
66”
354.08 sq. in.
6.84”
36 MPH
Crossover
125-180 lbs.
Vapor Graphite
67”
365.66 sq. in.
6.94”
36 MPH
Crossover
160-200 lbs.
Vapor Graphite
68”
379.65 sq. in.
7.05”
36 MPH
Crossover
180-220 lbs.
Vapor Graphite
69.5”
393.45 sq. in.
7.20”
36 MPH
Crossover
200+ lbs.
Senate Pro
67”
379.04 sq. in.
7.15”
34 MPH
Course
160-200 lbs.
Senate Pro
69”
402.01 sq. in.
7.36”
34 MPH
Course
160-220 lbs.
Senate Lithium
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
Up to 170 lbs.
Senate Lithium
67”
379.04 sq. in.
7.15”
34 MPH
Crossover
160-200 lbs.
Senate Lithium
69”
402.01 sq. in.
7.36”
34 MPH
Crossover
180-220 lbs.
Senate Lithium
71”
413.66 sq. in.
7.36”
34 MPH
Crossover
200+ lbs.
Senate Graphite
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
Up to 170 lbs.
Senate Graphite
67”
379.04 sq. in.
7.15”
34 MPH
Crossover
160-200 lbs.
Senate Graphite
69”
402.01 sq. in.
7.36”
34 MPH
Crossover
180-220 lbs.
Senate Graphite
71”
413.66 sq. in.
7.36”
34 MPH
Crossover
200+ lbs.
Senate Alloy
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
Up to 170 lbs.
Senate Alloy
67”
379.04 sq. in.
7.15”
34 MPH
Crossover
160-200 lbs.
Senate Alloy
69”
402.01 sq. in.
7.36”
34 MPH
Crossover
180-220 lbs.
Senate Alloy
71”
413.66 sq. in.
7.36”
34 MPH
Crossover
200+ lbs.
Lyric Graphite
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
Up to 170 lbs.
Lyric Graphite
67”
379.04 sq. in.
7.15”
34 MPH
Crossover
160-200 lbs.
Lyric
63”
340.70 sq. in.
6.78”
34 MPH
Crossover
Up to 130 lbs
Lyric
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
120-160 lbs.
Lyric
67”
379.04 sq. in.
7.15”
34 MPH
Crossover
160-200 lbs.
Boy's T.R.A.
63”
340.70 sq. in.
6.78”
34 MPH
Crossover
Up to 130 lbs
Boy's T.R.A.
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
120-160 lbs.
Girl's T.R.A.
63”
340.70 sq. in.
6.78”
34 MPH
Crossover
Up to 130 lbs
Girl's T.R.A.
65”
356.75 sq. in.
6.94”
34 MPH
Crossover
120-160 lbs.
Men's Union
65”
370.06 sq. in.
7.14”
32 MPH
Crossover
Up to 160 lbs.
Men's Union
67”
393.18 sq. in.
7.35”
32 MPH
Crossover
130-190 lbs.
Men's Union
69”
417.00 sq. in.
7.56”
32 MPH
Crossover
175-230 lbs.
Men's Union
71”
429.09 sq. in.
7.56”
32 MPH
Crossover
220+ lbs.
Women's Union
65”
370.06 sq. in.
7.14”
32 MPH
Crossover
Up to 160 lbs.
Women's Union
67”
393.18 sq. in.
7.35”
32 MPH
Crossover
130-190 lbs.
Katana
65”
378.72 sq. in.
7.28”
30 MPH
Crossover
Up to 160 lbs.
Katana
67”
390.31 sq. in.
7.28”
30 MPH
Crossover
130-190 lbs.
Katana
69”
413.96 sq. in.
7.50”
30 MPH
Crossover
175-230 lbs.
Men's Butterknife
65”
398.67 sq. in.
7.55”
30 MPH
Open Water
Up to 160 lbs.
Men's Butterknife
67”
423.58 sq. in.
7.78”
30 MPH
Open Water
130-190 lbs.