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Troy Lee Designs Catalyst X Knee Braces

$550.00

Item # TLD001M

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  • White, S ($550.00)
  • White, XL ($550.00)
  • White, XXL ($550.00)
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Item # TLD001M

Brace yourself.

Troy Lee Designs takes protection to a new level with its Catalyst X Knee Braces, which we're selling as a pair of left and right braces because, you know, that's how knees typically come. The Catalysts feature open upper and lower shells that provide maximum comfort and clearance on the medial aspect of both legs. This makes the system a perfect solution for both mountain bike and motocross athletes.

The frames are made of lightweight 7075 series aluminum, making them slim, moldable, and exceptionally durable. Troy Lee Designs then adds its Tibial Docking System, which works to secure tibial control. The braces also feature TLD's Autoconform aluminum core wings, which adapt your anatomy. Additionally, the PCL strap delivers increased stability throughout and the patella guard is removable for washing.

Extension stops adjust in five-degree increments, from 0 to 25 degrees, and flexion stops adjust in 15-degree increments, from 45 to 90 degrees. The braces are finished with moisture-wicking frame liners, condyle pads, and strap pads to keep you cool and comfortable.

The Troy Lee Designs Catalyst X Knee Braces come in a pair and are available in sizes Small to XX-Large and in the color White. Every brace is made in the USA.

  • 7075-series aluminum frame
  • Tibial Docking System
  • Autoconform aluminum core wings
  • PCL strap
  • Removable patella guard
  • Adjustable extension stops
  • Moisture-wicking frame liners

Tech Specs

Material:
7075 aluminum
Protection Area:
knee
Recommended Use:
mountain bike
Manufacturer Warranty:
1 year

Size chart

Troy Lee Designs

Impact Protection
Knee Brace
S M L XL XXL
Leg Circumference
(6in above mid patella)
14.5 - 17in
(36.8 - 43.2cm)
17 - 19.5in
(43.2 - 49.5cm)
19.5 - 22.5in
(49.5 - 57.1cm)
22.5 - 25.5in
(57.1 - 64.8cm)
25.5 - 30in
(64.8 - 76.2cm)
Leg Circumference
(mid patella)
11.5 - 13in
(29.2 - 33cm)
13 - 15in
(33 - 38.1cm)
15 - 17in
(38.1 - 43.2cm)
17 - 19in
(43.2 - 48.3cm)
19 - 22in
(48.3 - 55.9cm)
Leg Circumference
(6in below mid patella)
11.5 - 13in
(29.2 - 33cm)
13 - 14.5in
(33 - 36.8cm)
14.5 - 16.5in
(36.8 - 41.9cm)
16.5 - 18.5in
(41.9 - 47cm)
18.5 - 22in
(47 - 55.9cm)
Knee Guards KGS 5400
XS S M L
Lower Thigh
(3in above knee)
15 - 17in
(38.1 - 43.2cm)
16 - 18in
(40.6 - 45.7cm)
16.5 - 18.5in
(41.9 - 47cm)
18 - 21in
(45.7 - 53.3cm)
Top Calf
(4in below knee)
13 - 14.5in
(33 - 36.8cm)
14 - 16in
(35.6 - 40.6cm)
14.5 - 17in
(36.8 - 43.2cm)
15 - 18in
(38.1 - 45.7cm)
User Weight 70 - 90lb
(31.8 - 40.8kg)
90 - 140lb
(40.8 - 63.5kg)
140 - 180lb
(63.5 - 81.6kg)
180 - 220lb
(81.6 - 99.8kg)
Knee Guards KGS 5450
XS S M L
Lower Thigh
(3in above knee)
15 - 17in
(38.1 - 43.2cm)
16 - 18in
(40.6 - 45.7cm)
16.5 - 18.5in
(41.9 - 47cm)
18 - 21in
(45.7 - 53.3cm)
Mid Calf
(6in below knee)
13 - 14in
(33 - 35.6cm)
13 - 15in
(33 - 38.1cm)
14 - 15.5in
(35.6 - 39.4cm)
14.5 - 17.5in
(36.8 - 44.5cm)
User Weight 70 - 90lb
(31.8 - 40.8kg)
90 - 140lb
(40.8 - 63.5kg)
140 - 180lb
(63.5 - 81.6kg)
180 - 220lb
(81.6 - 99.8kg)
Elbow Guards EGL 5550
XS S M L
Lower Forearm
(6in down from elbow)
5 - 6.5in
(12.7 - 16.5cm)
5.5 - 7in
(14 - 17.8cm)
6.5 - 8in
(16.5 - 20.3cm)
7 - 8.5in
(17.8 - 21.6cm)
Mid Biceps
(3in up from elbow)
9.5 - 11.5in
(24.1 - 29.2cm)
10 - 12in
(25.4 - 30.5cm)
10.5 - 12.5in
(26.7 - 31.8cm)
10.5 - 13in
(26.7 - 33cm)
User Weight 70 - 90lb
(31.8 - 40.8kg)
90 - 140lb
(40.8 - 63.5kg)
140 - 180lb
(63.5 - 81.6kg)
180 - 220lb
(81.6 - 99.8kg)
Elbow Guards EGS 5500
XS S M L
Lower Forearm
(6in down from elbow)
5.5 - 6.5in
(14 - 16.5cm)
6 - 7in
(15.2 - 17.8cm)
6.5 - 8in
(16.5 - 20.3cm)
7.5 - 9in
(19.1 - 22.9cm)
Mid Biceps
(3in up from elbow)
9.5 - 11in
(24.1 - 27.9cm)
10 - 11.5in
(25.4 - 29.2cm)
10.5 - 12in
(26.7 - 30.5cm)
11 - 13in
(27.9 - 33cm)
User Weight 70 - 90lb
(31.8 - 40.8kg)
90 - 140lb
(40.8 - 63.5kg)
140 - 180lb
(63.5 - 81.6kg)
180 - 220lb
(81.6 - 99.8kg)
Kidney Belt 3305
Youth S/M L/XL
Waist Circumference 20 - 28in
(50.8 - 71.1cm)
28 - 34in
(71.1 - 86.4cm)
34 - 40in
(86.4 - 101.6cm)

Reviews & Community

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Avg. ride time: 1h 23m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Is the Catalyst X brace sold individually or in a pair?

The Catalyst X brace is sold as a set with both left and right specific braces.

Comfortable, durable, and protective

  • Familiarity: I've put it through the wringer

I have been using a pair of these for dirt biking (moto) for the last 18 months or so. They have proven durable and comfortable. Many, many crashes have demonstrated their protection.



No brace will protect against an ACL tear (they attach to your skin, after all) because the amount of twist necessary to do that is really small. (DAMHIK) They are, however, excellent for LCL, MCL, and hyperextension injuries. I also find them to be very comfortable, especially for gripping the tank and in slow-speed falls where the bike is on top of me.



The velcro on these is especially high-quality--I've seen no decrease in its hold. They do develop a nasty stink, however.



The adjustable stops for extension and flexion are a nice touch.

CTI braces will prevent an ACL tear...fyi