Tuff Country 55905 - Toyota Tundra 99-03 knuckle 5 lift kit User Manual
Tuff Country For the car
 
PART NUMBER : 55905 
1999 — 2003 TOYOTA TUNDRA 
5” SUSPENSION SYSTEM 
PARTS LIST: 
 
Part 
#
Description
Qty.
55900-01
Driver Side Spindle
1
55900-02
Passenger Side Spindle
1
55905-03
Rear brake proportioning valve bracket 1
55905-04
Front upper strut spacers
2
55905-05
Driver side differential drop bracket
1
55905-06
Passenger side differential drop bracket 1
55905-07
Driver side sway bar drop bracket
1
55905-08
Passenger side sway bar drop bracket 1
55905-09
One piece lower sub frame
1
55905-10
Steering shaft extension bracket
1
55905-11
Passenger side rack and pinion
support
bracket
1
BL401
4” Rear lifted blocks
2
5U-243S
9/16” x 2 1/2” x 10 5/8” rear U-bolt
4
916NW
9/16” U-bolt high nuts and washers
1
55905NB
Hardware
bag
1
55905SL
Poly and sleeve bag
1
95505
Rear extended brake line
1
55905INST Instruction
sheet
1
INSTALLATION MANUAL
TOYOTA TUNDRA 5”
SUSPENSION SYSTEM
1999—2003
PART # 55905
sj071904rev.01
Special note: This suspension system will ONLY 
work on vehicles that have front ABS. If the vehicle 
that you are working on does not have front ABS, 
and you would still like to install this part #, you 
must purchase an ABS plug for the new spindles. 
Please contact Tuff Country or your local Tuff 
Country dealer and order (2) of a part # 54900-13. 
 
Congratulations on your selection to purchase a Tuff 
Country EZ-Ride Suspension System. We at Tuff 
Country EZ-Ride Suspension are proud to offer a 
high quality product at the industries most 
competitive pricing. Thank you for your confidence 
in us and our product. 
 
For a list of all parts, please refer to the Parts 
Description Page, at the end of the Installation 
Manual. 
 
Make sure to use thread locker or locktite on all new 
and stock hardware associated with the installation 
of this suspension system. 
 
It is the responsibility of the installers to make sure 
that the rear view mirror hanger is hung from the 
rear view mirror. The rear view mirror hanger has 
instructions on proper post installation procedure. 
 
 
IMPORTANT CUSTOMER INFORMATION
Tuff Country EZ-Ride Suspension highly 
recommends that a qualified or a certified mechanic 
performs this installation. 
 
If you desire to return your vehicle to stock, it is the 
customers responsibility to save all stock hardware. 
 
It is the responsibility of the customer or the 
mechanic to wear safety glasses at all times when 
performing this installation. 
 
It is the customers/installers responsibility to read 
and understand all steps before installation begins. 
OEM manual should be used as a reference guide. 
 
This vehicles reaction and handling characteristics 
may differ from standard cars and/or trucks. 
Modifications to improve and/or enhance off road 
performance may raise the intended center of 
gravity. Extreme caution must be utilized when 
encountering driving conditions which may cause 
vehicle imbalance or loss of control. DRIVE SAFELY! 
Avoid abrupt maneuvers: such as sudden sharp 
turns which could cause a roll over, resulting in 
serious injury or death. 
 
It is the customers responsibility to make sure that a 
re-torque is performed on all hardware associated 
with this suspension system after the first 100 miles 
of installation. It is also the customers responsibility 
to do a complete re-torque after every 3000 miles or 
after every off road use. 
 
After the original installation, Tuff Country EZ-Ride 
Suspension also recommends having the alignment 
checked every 6 months to ensure proper tracking, 
proper wear on tires and front end components. Tuff 
Country EZ-Ride Suspension takes no responsibility 
for abuse, improper installation or improper 
suspension maintenance. 
 
The Tuff Country EZ-Ride Suspension product safety 
label that is included in your kit box must be 
installed inside the cab in plain view of all 
occupants.