The EZ-3 USX HD provides all the stability and control available in
recumbent trike technology while offering a little more thrill. And when
we say HD we mean heavy duty, with 110 psi tires, 48 spoke wheels with
double-wall rims, this trike will handle 400 pounds. Setting this trike
apart from others is its low center of gravity attained by three 20-inch
wheels that are cambered in the rear to increase cornering stability.
Also, the EZ-3 USX HD offers powerful brakes on all three wheels,
mid-frame suspension and under-the-seat steering. The EZ-3 USX HD might
not be for the superhuman daredevil, but it is quite perfect for the
casual to intermediate rider, and perfect for sunny days on the bike
path or zooming down the boardwalks. The EZ-3 USX features Direct
Steering, the new Slotted Seat adjustment system, and rattle-free and
infinite-adjust seat struts.
- Wheel Base: 59.5" (151cm)
- Overall Length: 78" (198cm)
- Width: 32" (81cm)
- Seat Height: 18" (45cm)
- Weight: 65lbs
- Weight Limit: 400lbs
- X-Seam: 36-47"
Frameset
Frame
EZ3 USX HD Main Frame, Custom Steel, TIG-Welded
Left Frame
EZ3 USX HD LH Main Frame Section, Custom Steel, TIG-Welded
Front Frame
EZ3 USX HD Front Frame, Custom Steel, TIG-Welded
Frame Bearing
Frame Pivot Bearing, 32x12mm
Shock
EZ3 USX HD Shock, KS-261, 150mm
Frame Pivot Bolt
Frame Pivot Bolt, 12mm
Fork
1-1/8" High Tensile Steel for USX HD, D-Blade w/Steer Tab
Drivetrain
Front Shifter
SRAM 3.0 3-Speed Grip Shift
Rear Shifter
SRAM 3.0 7-Speed Grip Shift
Front Derailleur
Microshift FD-M22, DP, 31.8
Freewheel
Sunrace (7-Speed) 14-34T
Freewheel Adapter
Freewheel Adapter Threaded
Crank Set
Alloy, 3-Piece, 170x52/42/32T
Bottom Bracket
Sealed Cartridge, 68 x 118mm
Chain
K.M.C. Z51 1/2 x 3/32'' (216 Links)
Chain Tube Bracket
Double Spring w/Hardware
Chain Tube Clamp
Clamp w/Hardware
Pedals
Resin Body w/Alloy Cage, 9/16"
Brakes
Front Brake
Alloy, Linear Pull, Black
Rear brake
Promax DSK-400 Disc w/160mm Rotor
Components
Headset
Steel Integrated, 28.6x44x30mm, Black
Rear Headset
Steel, 28.6x34x30mm Threadless for Underseat Steering
Handlebar
Alloy, Recumbent, Underseat
Right Handlebar
Right Handlebar Extension USX 22.2mm
Left Handlebar
Left Handlebar Extension USX 22.2mm
Stem
Alloy, Threadless, 28.6 x70mm x25deg x25.4mm Clamp, Black
Grips
Kraton Rubber-Gel, 75mm, 2-Tone Black/Grey
Front Brake Lever
Linear Pull w/Lock, Black/Silver
Rear Brake Lever
Linear Dual Pull, Black/Silver
Saddle
Recumbent, w/Tri-Stitch Cover
Wheels
Front Hub
Alloy, 48H x 14G with Q/R Axle, Black
Rear Hub
Alloy, 48H x 14G with 14mm Bolt-On Axle, Black, For F/W, Disc Compatible
Front Rim
Alloy, Double Wall 20'' x 48H x 14G, Black
Rear Rim
Alloy, Double Wall 20'' x 48H x 14G, Black
Spokes
14G Stainless Steel with Brass Nipples, Black
Front Tire
Maxxis Hook Worm 20 x 1.95", 110psi
Rear Tire
Maxxis Hook Worm 20 x 1.95", 110psi
Replacement Parts
Rear Unit Hardware
Rear Unit Hardware Kit
Head/Derailleur Tube Cap
Head/Derailleur Tube Cap
Steering Linkage
USX HD Silver
Left Rod End
Left Hand Thread
Right Rod End
Right Hand Thread
Left Rear Axle
Rear Axle Left Side USX
Right Rear Axle
Rear Axle Right Side USX
Locking Axle Collar
Locking Axle Collar & Spacer EZ3/X3 USX
Internal Snap Ring
Rear Axle Internal Snap Ring USX 2"
Axle Bearing
Rear Unit Axle Bearing 20id x42od x9w EZ3 USX HD
Axle Retaining Bolt
Rear Axle Retaining Bolt/Cap USX RH Sml
Axle Retaining Nut
Rear Axle Retaining Bolt/Cap USX LH Lrg
Hub Retaining Bolt
Trike Hub Ret Bolt/Cap for Square or Tapered, Black
Seat Mesh
Cool Back Seat Mesh
Seat Back
Cool Back Steel w/Dual Bottle Mounts
Seat Cover
Tri-Stitch, Permanent
Seat Mount
Steel for 31.8mm TT
Seat Mount Binder
QR M6x88mm Alloy, XL Lever
Seat Back Pivot Bolt
10mm, Chrome
Upper Strut
Steel 150mm Black
Upper Strut Washer
Curved Nylon Washer
Lower Strut
Steel, Pin Type, 700mm Universal
Lower Strut Slide Bolt
Lower Strut Bolt and Nut
Strut Peg QR
Steel Pin, QR
Bottom Bracket Cover
Shell Cover Black
Reviewed by Adulttricyclereview.com
Sun Seeker EZ-3 USX HD Review on December 17, 2020
Every trike
has it place and every person can find the perfect trike for their needs
by doing their homework. The Sun Seeker EZ-3 USX HD can be the perfect
trike for someone who is mobility challenged or over 300 pounds. The
HD at the end of the USX name stand for Heavy Duty and that is exactly
what this trike is all about. Sun Bicycle, the manufacture of the USX
HD, is the largest manufacture of adult triycles in the world and have
been building quality trikes for over fifty years. Sun trikes are at
the lower end of the market cost wise compared to other brands yet still
offer good quality.
Frame: The frame is TIG
welded together out of steel and is heavy and a bit overbuilt compared
to other trikes on the market. The USX HD is capable of carrying very
heavy loads; you should have no worries about the durability of this
frame no matter how heavy the rider.
Paint: Any
color you want as long as it is silver. The paint is more than
adequate, sprayed on evenly with a nice finish. The paint should last
the life of the trike even if you live in a harsh weather environment.
Drive Train:
The Drivetrain is a 21 speed Shimano with a grip type shifter. The
Drivetrain is an entry level Shimano and works adequately for an entry
level rider.
Brakes: The Sun USX HD has unique
brake system where the right brake lever controls both the rear brakes.
The rear brakes are discs that are attached to each wheel. The left
brake lever controls the front brake and both brake levers have a
parking lock. For people with special needs the brakes can be switched
from left to right or if someone just prefers to have the rear brakes
controlled by their left hand it can easily be switched. The brake have
good stopping power and stop the trike sufficiently while not making
the trike pull to one side or the other.
Seat:
People find the seat on the Sun USX HD very much to there liking. The
bottom is very wide and uses a very nice soft gel material. The seat
back is independent from the bottom so the back can be positioned very
upright if someone so desires. The seat back is made from a very
breathable mesh so your back should not get hot and sweaty.
Wheels:
This is where most problems happen with trikes. The Sun USX HD wheels
are exceptional, and I will go so far as to say that they are the
strongest recumbent wheels on the market period. The Sun wheels have 48
spokes per wheel whereas most trikes have 32 or 36 spokes per wheel.
The rims on the Sun USX HD are also wider and heavier duty than rims on
other brand trikes. Sun also chose a premium tire the Maxis Hookworm
which is wider and more durable than most tires used on other trikes.
The Hookworn tire has a smooth tread to improve the roll of the trike an
can be inflated all the way up to 110 Psi. Sun also chose a heavier
duty rear axle which can withstand significantly more punishment than
standard diameter axles.
Ride: The Sun USX rear
wheels are chamfered giving the trike increase stability when turning
corners. The USX frame is hinged in the middle with a shock absorber
which smooths out the ride considerably over a rigid frame. The trike
handled well and the steering had a light feel to it. I am sure Sun
Seeker had a target person in mind when they were designing this trike.
The trike can fit people and X-Seam between 36 and 47 inches.
In conclusion:
I think this trike could be a good choice for someone over 300 Lbs. If
you weigh less than 300 Lbs you should probably look at some lighter
more efficient trikes.
Pros: Full Suspension, Strong, Durable, dependable, comfortable and built to last.
Cons:
Heavy and slow, handlebars feel a bit awkward on the placement if the
seat is in a very upright position. Not stable on down hill compared to
a tadpole style trike.