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Alpinestars Summer Tech Race Undersuit
  • Alpinestars Summer Tech Race Undersuit - Black
  • Alpinestars Summer Tech Race Undersuit - Black

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Alpinestars Summer Tech Race Undersuit Videos

Alpinestars Summer Tech Race Undersuit

Anyone who has ever worn one knows that race suits are hot no matter how perforated they are. In order to keep you suit from turning into a slimy mess, the Alpinestars Summer Tech Race Undersuit is designed to give you a moisture wicking lining that keeps you cool and your suit from getting funky.. Available as a 1-piece undersuit.


  • Designed for warm weather riding
  • Coldtack fabric construction
  • Micro perforated insert panel for comfort and breathability
  • Ergonomic flat lock seam construction
  • Compression fit design to reduce muscle fatigue
  • Off-set main zipper closure
  • Printed Astar logo
  • Leaf not included

Alpinestars Men's Base Layer Sizing

Euro Alpha US Pant Size Chest (cm) Waist (cm) Hips (cm) Thigh (cm) Inseam (cm) Arm (cm) Height (cm)
44 XS 28 86-90 72-76 87-91 52-53 75-76 53-54 164-167
46 SM 30 90-94 76-80 91-95 54-55 77-78 55-56 168-171
48 SM-MD 32 94-98 80-84 95-99 56-57 79-80 57-58 172-175
50 MD-LG 34 98-102 84-88 99-103 58-59 81-82 59-60 176-179
52 LG 36 102-106 88-92 103-107 60-61 83-84 61-62 180-183
54 XL 38 106-110 92-96 107-111 62-63 85-86 63-64 184-187
56 XL-2XL 40 110-114 96-100 111-115 64-65 87-88 65-66 188-191
58 2XL 42 114-118 100-104 115-119 66-67 89-90 67-68 192-195

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How To Measure

C Chest Measure around the fullest part of your chest, under the armpits, keeping the measuring tape parallel to the ground.
W Waist Measure around your natural waistline, around the top of the hip bones, inline with the navel while keeping the measuring tape parallel to the ground.
HP Hips Measure the circumference, from pelvic bone to pelvic bone, at the widest part of your hips below the waist.
I Inseam Measure from the highest point of your crotch down to your ankle, along your inner leg.
H Height With no shoes on, stand with your back against a wall and your feet together. Measure from the floor to the top of your head.
A Arm (Shoulder to Wrist) Standing up straight with your arms at your sides, measure from the Acromion or summit of your shoulder, down to your wrist bone, along the outside of the arm.
T Thigh Measure the circumference of your thighs at the widest point, while in a seated position, with your knees bent to a 90° angle.
Product Style RevZilla Item # Manufacturer Product # Availability
Black / SM 304073 475208-10-S/29400080 In Stock: Ships within 24 hours
Black / MD 304074 475208-10-M/29400081 In Stock: Ships within 24 hours
Black / LG 304075 475208-10-L/29400082 In Stock: Ships within 24 hours
Black / XL 304076 475208-10-XL/29400083 In Stock: Ships within 24 hours
Black / 2XL 304077 475208-10-2X/29400084 In Stock: Ships within 24 hours
Black / 3XL 304078 475208-10-3X/29400085 Available: Requires 1-5 business days lead time prior to shipment


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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
Alpinestars Summer Tech Race Undersuit 4.7 5 32 32
What you need under your full suit Fits great and is awesome under suit! If you wear a one piece suit, you need this in your life October 5, 2015
Nice fit I usually wear XL in shirts because I like a loose fit. I purchased this suite in medium because I wanted an almost skin tight fit to stay in place and not roll up underneath my race suite. The medium fit was perfect for me. Tight but not too tight, it feels comfortable like wearing comperssion fit clothing July 16, 2015
Comfortable Works well under the race suit. Stretch material is comfortable. May 26, 2015
This product fits& works great Great baselayer, stayed cool and comfortable while riding canyons in California on a hot day, very easy to slide leathers on and off with baselayer underneath, felt great March 9, 2015
Good base layer, minor issues Doing things again, I would probably go with the two piece version to avoid the zipper (the cloth layer that keeps it off your chest hair can fold over while zipping; if you don't notice it will result in some uncomfortable moments while riding). The ends of the sleeves are a little bit loose. I wish there was more thickness/airflow/something under the back protector plate. Otherwise its pretty good. November 10, 2014
Works as described I have not been to a really hot track day with it yet so that will be the true test. But I have had a good experience with it at the two track days so far. It seems to run just a bit big on me. November 10, 2014
works, does what it says and looks sharp, at a price Great product, keeps me cool under my one piece, just can't wrap my head around why that little logo costs 80 dollars more than say an under armor logo. I think Alpinestars is good, branding is nice, but just so expensive July 28, 2014
Great buy I bought my first 1 piece suit and found it difficult to get out if it once I was done riding. This base layer makes it a piece of cake to get out my 1 piece suit. July 14, 2014
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