Tein Flex Z Coilovers For Toyota Prius 2016 - 2021

Tein's Flex Z coilovers are a complete twin tube coilover kit with upper mounts and offer full-length ride height adjustment and damping force adjustment.

NEW APPROACH TO ACHIEVE LOW PRICES
FLEX Z inherits all the features and quality of STREET FLEX but the adoption of new platform allows its price to be set at AN amazingly low PRICE range. FLEX Z, of course, maintains the long-favored "Made in Yokohama" quality. Ride height adjustable shock absorber, fully loaded with TEIN's comprehensive technology, is now more affordable than ever.

After careful consideration, TEIN came to the conclusion that they need to establish new manufacturing system and to develop a new product platform, in order to achieve low prices that customers demand. Until now, all TEIN dampers could be disassembled for overhaul; Now, they introduce their new "Sealed Structure" for the FLEX Z. Top end of shell pipe is drawn, oil & gas are injected then the opening is completely sealed by crimping process. This "Sealed Structure" process also reduces the production time, compared to the production of existing disassembable dampers. In addition, pursuit of efficient production system, such as use of seam welding, allows us to drastically reduce the production cost.

TWIN TUBE SYSTEM FOR COMFORTABLE RIDE ON THE STREETS
Considering the use of larger tires/wheels and the lowered ride height, FLEX A uses twin-tube system, in pursuit of ride comfort on streets. In order to maintain the ride quality on streets with rough spots here and there, a shock absorber has to have sufficient stroke, be low-frictional and move smoothly. as an oil chamber and a gas chamber are not arranged serially in a twin-tube system, it is easy to secure enough stroke. Also, low gas pressure keeps friction low. Its smooth stroke movement makes it possible to follow rough and bumpy road surfaces quite well, offering supple ride at low speed and stable ride at high speed.

FULL-LENGTH SYSTEM FOR RIDE HEIGHT ADJUSTMENT WITH MINIMAL CHANGE IN RIDE QUALITY
Full-length ride height adjustment system, used for FLEX A, enables adjustment of ride height by adjusting the case length, without changing the damper stroke length and/or spring pre-load. This has the advantage that the change in ride quality is kept minimal when the height is adjusted. This system not only makes it possible to maintain good balance between the low-down appearance and ride comfort, but also provides more setting choices for sport driving as well.

DAMPING FORCE IS ADJUSTABLE
FLEX A has ever-popular 16-level damping force adjustment (compression/rebound together) feature with the use of needle valve. By turning the adjustment knob, damping force (stiffness) is adjusted linearly step by step, to change the ride and handling of the car to suit driver's needs/preferences. Use of well-reputed "ADVANCE Needle" at the needle valve for oil flow control widens damping force adjustable range to about 200% of the existing lineups. Whether it's for the handling characteristics of sport driving or for the ride quality according to numbers of passengers, finding the most desirable setting is easier than ever.

UPPER MOUNTS INCLUDED FOR EASY INSTALLATION
FLEX A kit includes upper mounts exclusively designed for each vehicle model; either reinforced rubber mounts or pillow ball mounts. Pillow ball upper mounts for front strut suspensions have camber adjustment feature. (Some vehicle models use OE mounts.)

HIGHLY DURABLE AND RELIABLE
After many years of research and study, TEIN has developed optimally-shaped dust boot made of most suitable material. Elastic & highly-durable dust boot effectively prevents damages to the piston rod and foreign substances from getting inside the shock absorber. (Some vehicle models use OE dust boots.) Final assembly of shock absorbers is done in the clean room, which is almost equivalent to operating room. Room pressure is kept under control to shut out dust & dirt and all workers entering the room must take air shower, to make sure all the assembly work is done in completely clean air, in order to maintain higher level of accuracy and reliability.

THOROUGH RUST PROOFTING
Upper mounts and lower brackets are coated with rich TEIN green powder paint. This powder paint has high coating film strength, is highly durable yet is low-pollution due to non-use of harmful solvent. After the shot blasting pre-treatment, the patented "2-layer/1-bake" treatment using anti-rust powder paint is applied for superior durability and high corrosion resistance. (Patent No. 4347712) On shell case, TEIN's self-developed one-of-a-kind "ZT Coating" is applied, for tougher protection against chipping, often caused by bounced pebbles, and rust. With zero claim rate, against adhesion, out of 500,000 dampers sold, we are confident that people living in snowfall area or near seashores would even be very satisfied.

SMOOTH RIDE HEIGHT ADJUSTMENT AND ONE-OF-A-KIND ADJUSTING WRENCH
FLEX A has adopted the new wrought aluminum spring seats and low-friction hard-resin thrust washers. These effectively reduces the friction with springs, caused during ride height adjustment, and makes it easier to adjust the ride height with pre-load on the springs. Shell cases are treated with "ZT Coating", a superlow-friction fluorine resin coating, which is tightly baked onto the surface in-house. This special coating provides superior protection against rust and high lubricity, for keeping a smooth adjustment for a long period. FLEX A kit includes one-of-a-kind user-friendly ride height adjusting wrench. It has a 12.7mm (1/2in) sq. hole for attaching spinner handle and/or torque wrench for tightening at high torque.

NO-SAG SPRINGS
Included springs are made of high-tensile steel SAE9254 (tensile strength 200kgf/mm2 or over) and cold formed for excellent resistance to sagging and for superior quality stability. Surface is powder coated for superb protection against chipping & peeling, for high durability and for superior anti-corrosion performance. High-quality spring can be used under various conditions without any worry. The most suitable shape of spring (straight or barrel-shaped) is determined for each vehicle model, to provide wide ride height adjustable range and to secure sufficient stroke without compromising ride comfort.

HIGH-SPEC DAMPER OIL
Specially-formulated high-spec oil exhibits stable viscosity characteristics at any temperature; from low to high, to allow shock absorbers to stroke smoothly and to generate damping force stably under various conditions. The oil has superior anti-foaming characteristics hence the bubble cavitation and/or thermal degradation hardly occurs, making it even suitable for tough sport driving. The oil also does not deteriorate much with age, making it possible to maintain and deliver superior performance for the long term.

FOR 2015.12+ TOYOTA PRIUS S, S TOURING ZVW50 Front Wheel Drive :

FRONT
Damping Force Adjustment: Yes
Upper Mount: R/U
Mininum Drop: -0.4 inches
Maximum Drop: -2.4 inches
Spring Rate: 224 lbs/in

REAR
Damping Force Adjustment: Yes
Upper Mount: R/U
Minimum Drop: -0.8 inches
Maximum Drop: -2.6 inches
Spring Rate: 263 lbs/in



FOR 2015.12+ TOYOTA PRIUS A PREMIUM, A PREMIUM TOURING, A, A TOURING ZVW51 Front Wheel Drive :

FRONT
Damping Force Adjustment: Yes
Upper Mount: R/U
Mininum Drop: -0.4 inches
Maximum Drop: -2.4 inches
Spring Rate: 224 lbs/in

REAR
Damping Force Adjustment: Yes
Upper Mount: R/U
Minimum Drop: -0.8 inches
Maximum Drop: -2.6 inches
Spring Rate: 263 lbs/in



;FRONT: SHOCK ABSORBER NEEDS TO BE DETACHED FROM VEHICLE, WHEN ADJUSTING DAMPING FORCE. FRONT/Rear: USE OF EDFC SERIES IS RECOMMENDED, AS IT'S DIFFICULT TO ADJUST DAMPING FORCE BY HAND.