

Intelligent Design
Progress
Technology's engineering staff has over forty years of combined
experience in the design and tuning of performance suspension systems,
including CART/Indy Cars, IMSA, SCCA, and SCORE competitors. Progress
Technology's engineering staff are enthusiasts, and know how to build
and tune performance automobiles. The Progress Technology Sport Spring
designs are a product of their engineering and manufacturing expertise.
Real Quality
Manufactured from certified
high-tensile SAE spring materials, utilizing sound design and
manufacturing principles, and individually tested toour stringent
tolerances. The PROGRESS Lifetime Warranty assures enthusiasts of our
exceptional quality products.
Modern Manufacturing
Cold-wound using
computer-numeric-control (CNC) automated equipment. Stress-relieved,
pre-set, and shot-peened for maximum precision and durability inspected
to our exacting specifications.
Lowers 2" Front & Rear
Additional shipping to Hawaii, Alaska, Guam, Puerto Rico & International orders.
Payment
Shipping
We accept payment by any of the following methods:
PayPal
Please pay as soon as possible after winning an auction, as that will allow us to post your item to you sooner!
We offer FREE shipping on all orders!
Your order will be dispatched within 1 working day of receiving payment (Monday-Friday)
In the very unlikely event that your item is lost or damaged during post, then WE are responsible and will issue either a full refund or replacement.
Returns
No Returns. All sales are final


Intelligent Design
Progress
Technology's engineering staff has over forty years of combined
experience in the design and tuning of performance suspension systems,
including CART/Indy Cars, IMSA, SCCA, and SCORE competitors. Progress
Technology's engineering staff are enthusiasts, and know how to build
and tune performance automobiles. The Progress Technology Sport Spring
designs are a product of their engineering and manufacturing expertise.
Real Quality
Manufactured from certified
high-tensile SAE spring materials, utilizing sound design and
manufacturing principles, and individually tested toour stringent
tolerances. The PROGRESS Lifetime Warranty assures enthusiasts of our
exceptional quality products.
Modern Manufacturing
Cold-wound using
computer-numeric-control (CNC) automated equipment. Stress-relieved,
pre-set, and shot-peened for maximum precision and durability inspected
to our exacting specifications.
Lowers 2" Front & Rear
Additional shipping to Hawaii, Alaska, Guam, Puerto Rico & International orders.
Payment
We accept payment by any of the following methods:
PayPal
Please pay as soon as possible after winning an auction, as that will allow us to post your item to you sooner!
Shipping
We offer FREE shipping on all orders!
Your order will be dispatched within 1 working day of receiving payment (Monday-Friday)
In the very unlikely event that your item is lost or damaged during post, then WE are responsible and will issue either a full refund or replacement.
Returns
No Returns. All sales are final