Page 425 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

5" I.D. x 5" Tall
Rear Stacking Springs
Springs allow conventional rear primary spring
to be stacked with a secondary spring to create a
Conventional Coil Springs
tunable series/dual-rate spring assembly, making for
FRONT SPRINGS - BLUE POWDER COATED a softer initial spring rate and stiffer secondary rate.
5.0" O.D. 5.0" O.D. 5.5" O.D. 5.5" O.D. 5.5" O.D. Requires an aftermarket spring coupler for proper
9.5" Tall 10.5" Tall 9.5" Tall 11" Tall 12" Tall operation.
Rate Y Prefix Y Prefix Z Prefix Z Prefix Z Prefix
300 HYP18Y0300 — HYP18Z0300 — — Rate Part No.
350 — HYP18Y0350-10.5 HYP18Z0350 — — 200 HYP18SS-200
400 — HYP18Y0400-10.5 HYP18Z0400 — — 300 HYP18SS-300
450 — HYP18Y0450-10.5 HYP18Z0450 — — 400 HYP18SS-400
475 HYP18Y0475 — — — —
500 HYP18Y0500 — HYP18Z0500 — — Progressive Pull Bar Springs
525 HYP18Y0525 — — — —
550 HYP18Y0550 — HYP18Z0550 — — Springs are 5" O.D. x 7" tall.
575 HYP18Y0575 — — — — Part No. Description
600 HYP18Y0600 — HYP18Z0600 — — HYP600-1200 600/1,200
625 HYP18Y0625 — — — — HYP900-1300 900/1,300
650 HYP18Y0650 — HYP18Z0650 — — Stacked Spring Divider,
700 HYP18Y0700 — HYP18Z0700 — — HYP18DS100 Couples 2-1/2" I.D. Take-Up Spring
750 HYP18Y0750 — HYP18Z0750 — —
800 HYP18Y0800 — HYP18Z0800 HYP18Z0800-11 HYP18Z0800-12
850 HYP18Y0850 — HYP18Z0850 — — Linear Conventional
900 HYP18Y0900 — HYP18Z0900 HYP18Z0900-11 HYP18Z0900-12
950 HYP18Y0950 — HYP18Z0950 — — Pull Bar Spring HYP1225PB
1000 HYP18Y1000 — HYP18Z1000 HYP18Z1000-11 HYP18Z1000-12 Spring is 5" O.D. x 6.625" free length.
1050 HYP18Y1050 — HYP18Z1050 — —
1100 — — HYP18Z1100 HYP18Z1100-11 HYP18Z1100-12
1200 — — HYP18Z1200 HYP18Z1200-11 HYP18Z1200-12
1300 — — — HYP18Z1300-11 HYP18Z1300-12 Detroit Locker Spring
1320 — — HYP18Z1320 — —
1440 — — HYP18Z1440 — — HYPLOCKERSPRG
Directly replaces the stock spring in Ford 9" rear
REAR SPRINGS - BLUE POWDER COATED - FLAT BOTH ENDS ends with Detroit Lockers.
5.0" O.D. 5.0" O.D. 5.0" O.D. 5.0" O.
11" Tall 13" Tall 16" Tall 20"
Rate SN Prefix S Prefix SNU Prefix SNT Composite Leaf Springs
80 — — — HYP18SNT-080
Aerospace epoxy matrix composite is 70% lighter than steel
100 — HYP18S-100 HYP18SNU-100 HYP18SNT-100 with quicker response, higher yield strength and better reten-
125 HYP18SN-125 HYP18S-125 HYP18SNU-125 HYP18SNT-125 tion. Springs are molded to the exact shape to resist relaxing.
150 HYP18SN-150 HYP18S-150 HYP18SNU-150 HYP18SNT-150 ,QLWLDO FRVWV DUH JUHDWHU EXW FRPSRVLWH VSULQJV ZLOO ODVW ¿YH WLPHV
165 — HYP18S-165 — — longer than steel.
175 HYP18SN-175 HYP18S-175 HYP18SNU-175 —
185 — HYP18S-185 — —
200 HYP18SN-200 HYP18S-200 HYP18SNU-200 —
225 HYP18SN-225 HYP18S-225 HYP18SNU-225 — Front Bolt Rear Bolt
Rate
Part No.
250 HYP18SN-250 HYP18S-250 HYP18SNU-250 — Chrysler Composite Leaf Springs Arch Dia. Dia.
275 HYP18SN-275 HYP18S-275 — —
300 HYP18SN-300 HYP18S-300 — — HYP10230 175 4.5" .625" .500"
325 HYP18SN-325 HYP18S-325 — — HYP10231 200 4.5" .625" .500"
350 HYP18SN-350 HYP18S-350 — — HYP10240 225 4.5" .625" .500"
400 HYP18SN-400 — — — Chevy Camaro Composite Leaf Springs
450 HYP18SN-450 — — — HYP11340 175 4.5" .562" .500"
500 HYP18SN-500 — — — HYP11342 200 4.5" .562" .500"
HYP11344 225 4.5" .562" .500"
REAR PIGTAIL SPRINGS HYP11348 250 4.5" .562" .500"
Single Pigtail Single Pigtail Double Pigtail
5.5" O.D., 11" Tall 5.5" O.D., 12" Tall 7" O.D., 14" Tall
Rate SNP Prefix SNP Prefix SDP Prefix
175 HYP18SNP11-175 HYP18SNP12-175 HYP18SDP-175
200 HYP18SNP11-200 HYP18SNP12-200 HYP18SDP-200
225 HYP18SNP11-225 HYP18SNP12-225 HYP18SDP-225
250 HYP18SNP11-250 HYP18SNP12-250 — Conventional Coil Springs Reference
275 HYP18SNP11-275 HYP18SNP12-275 —
300 — HYP18SNP12-300 HYP18SDP-300 • 5" front springs fit 1964-72 Chevelle, 1967-69 Camaro and 1968-74 Nova
• 5-1/2" front springs fit 1973-up Chevelle, 1970-up Camaro, 1975-up Nova
and most Fords
2019-20 CIRCLE TRACK PARTS AND ACCESSORIES 421