Sun Bicycles EZ-3 USX HD

Sun Bicycles


Availability: In Stock
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Product Rating
1.0 stars
 (1 Review)

Sun Bicycles EZ-3 USX HD

The EZ-3 USX HD provides equal stability compared to a more traditional trike like the X3 but with the added thrill of a lower center of gravity and some very unique features. Three 20” wheels (cambered in the rear) and a revolutionary frame design give this trike great cornering ability as well as a sleek, low profile stance. The EZ-3 USX HD also offers unmatched stopping power with two massive rear disc brakes, under-seat steering and a Kind Shock® suspension system to ensure a smooth, problem free ride. This may not be the bike for the pure speed enthusiast but for the casual to intermediate rider it’s perfect for zooming around town and turning heads everywhere you go.

The 2008 model features a new rattle free seat strut system with infinite adjustment, an improved rounded top tube with slotted seat slide system, and, most importantly, a trio of 48 spoke, double wall rimmed wheels with Maxxis Hookworm 110psi tires, giving the trike a 400 lbs. weight capacity (hence the "HD" for heavy duty in the name change).

Features and Information

Specification Description
Wheel Base 59.5" (151cm)
Overall Length 78" (45cm)
Width 32" (81cm)
Seat Hight 18" (145cm)
Frame High Tensile Tig Welded Steel
Fork High Tensile Steel
Front Derailleur Shimano
Rear Derailleur Shimano
Crank Alloy 170 x 52/42/30 (steel rings)
Shifter Sram
Freewheel 13-28 7sp
Pedals Alloy Cage
Brake Front Promax Alloy Linear Pull
Brake Rear Winzip Dual Mech. Disc
Brake Levers Promax Alloy w/L.H. Lock
Headset 1" Steel
Handlebar Steel
Stem Alloy
Hub Front Allooy QR
Hub Rear Alloy Sealed Bearing Dist Trike
Rim Front 20 x 1.75 48h Double Wall Alloy
Rim Rear 20 x 1.75 48h Double Wall Alloy
Spokes 14g Stainless Steel
Tire Front 20 x 1.95 BW Maxxis Hook Worm 110 psi
Tires Rear 20 x 1.95 BW Maxxis Hook Worm 110 psi
Saddle Contoure Foam w/ Tri Color Top
Seat Slide Steel
Seat Back Cool Back Adjustable w/ Bottle Braze-ons
Weight 65 lbs
Capacity 400 lbs

* Subject to change without notice.


by PowerReviews
--- [ Replace PRoduct Name ] ---
1.0 stars

(based on 1 review)


of respondents would recommend this to a friend.


  • Exelent tires but 20 
  • Frame is strong enough 
  • No light mounts 
  • No light mounts is A con 
  • Seat is okay 


  • 20 
  • No bottle mounts 
  • No light mounts 
  • Poor chain support 
  • Poor quality 

Best Uses

  • Daytime casual use only 

Reviewed by 1 customers

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Displaying reviews 1


Too many problems.

By Druander

from Kennewick, WA

About Me Commuter

Verified Reviewer


  • No Light Mounts Is A Con
  • Seat Is Okay
  • No Light Mounts
  • Frame Is Strong Enough
  • Exelent Tires But 20


  • No Bottle Mounts
  • No Light Mounts
  • Poor Chain Support
  • Rear Derailer Too Low
  • Poor Construction
  • 20
  • Sloppy Steering Linkage
  • Will Not Accept A Trailer

Best Uses

  • Daytime Casual Use Only


As a day time only fun ride bike, I would recommend it to anyone wanting that in a bike. Otherwise, no, I wouldn't recommend it. It's biggest problem is the rear derailer. It WILL catch on things that are sticking up in the road or pathway. Bent up derailers are no fun, unless you love pushing your bike instead of riding it. It doesn't come with anyway to mount anything to the frame either. After 6 months of use and the rear derailer shot, I gave it away and bought a tadpole that had all the mountings I needed, including being able to finally pull my trailer again.

  • Gift:
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