Free Shipping for orders over $50

Troy Lee Designs A1 Helmet

Size Guide
Our Guarantee

our part num: B-131090705XL

Troy Lee Designs A1 Helmet - All Mountain Challenger from TLD

The Troy Lee Designs A1 helmet is TLD's highly competent offering in the all-mountain helmet segment. With extended coverage on the back side of the helmet, an adjustable visor, a vertically adjustable fit system, and lots of big vents, the TLD A1 is a serious contender for all mountain / all day use. 

Troy Lee Designs A1 Helmet

  • In-mold construction - light weight, only 360g
  • Fit System - dials for easy, customized fit;  3 position vertical adjustment to accommodate goggles/riding position
  • Ventilation16 large vents, deep internal channels keeps your head cool
  • Lower Rear Profile extended coverage on the back of your head
  • Padding - One-piece; removable/washable; anti-microbial/moisture-wicking keeps head dry; TLD logo 
  • Visor - adjustable, removable, moto-inspired. 1in range of adjustment
  • Chin Strap: Attaches to helmet front of ear/rear helmet; sliding buckles tighten/loosen, lock for secure placement 
  • Emergency information sticker included 
  • Helmet Travel Bag included
  • Weight: 360 grams for L/XL
  • Safety standards: Meets US CPSC, EN 1078 safety standards
  • Suitable for downhill/trail mountain, x-country, dirt

Troy Lee Designs

Troy Lee helmets are known for their gorgeous, intricate, mega-cool graphics. But equally important is the company’s quest for thoughtful design that combines functional and aesthetic objectives. In other words, Troy Lee makes helmets that not only look good but are designed to keep you safe and comfortable. The company began in the late 1970s when a teenaged Troy Lee, a racer himself, started making custom-painted helmets in his garage. Troy Lee Designs specializes in making exclusive clothing lines for the fastest racers of the world. The company continuously gathers feedback from top racers and incorporates their needs and desires back into Troy Lee products. Their line of casual clothing includes rally jackets, t-shirts, long sleeved shirts, and for men, women, and kids. They have designs catering to bicycle riders, motocross, and MX riders. For MX racers, there is also a wide range of helmets, gloves, pants, jerseys, short and accessories to choose from.


Related Items

Troy Lee Designs Size Chart

Troy Lee Designs Helmets, Pads, and Armor Size Guide

(click/tap outside this box to close)

Troy Lee Designs Helmets Size Charts


TLD D2 and D3 Full Face Helmets Size Chart

Size Head Circumference
Medium 56-57cm
Large 58-59cm
Extra Large 60-62cm


TLD A1 Helmet Size Chart
Size Head Circumference
Small/Medium 56-59cm
Large/Extra Large 60-62cm


TLD Knee Pads Size Chart (KG 5400, KG 5450)

Size Lower Thigh (4in above knee) Mid Calf (fullest part of calf)
Extra Small 15-17in 13-14in
Small 16-18in 13-15in
Medium 16.5-18.5in 14-15.5in
Large 18-21in 15-18in


TLD Elbow Pads Size Chart (EG 5400, EG 5450)

Size Lower Forearm (3in below elbow) Bicep (fullest part of bicep)
Extra Small 5-6.5in 9.5-11.0in
Small 6-7in 10-11.5in
Medium 6.5-8.0in 10.5-12in
Large 7.5-9.0in 11-13in


TLD Upper Body Armor Size Chart (BP 7855, BP 7850)


Size Chest Circumference
Youth Medium 26-27in
Youth Large 28-29in
Youth Extra Large 30-32in
Small 34-35in
Medium 36-38in
Large 40-42in
Extra Large 44-46in


TLD Padded Shorts Size Chart (LS 7605, LS 4600)


Size Waist
Youth Medium 24-26in
Youth Large 26-28in
Extra Small 28-30in
Small 30-32in
Medium 32-34in
Large 34-36in
Extra Large 36-38in


TLD Wrist Supports Size Chart (WS 3205, WS 5205)

Size Wrist Circumference
Small 6.0-6.5in
Medium 6.5-7.0in
Large 7.0-7.5in


(click/tap outside this box to close)