Conventional Coil Springs Front Springs - Blue Powder Coated
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 tunable series/dual-rate spring assembly, making for a softer initial spring rate and stiffer secondary rate. Requires an aftermarket spring coupler for proper operation. Rate Part No. 200 HYP18SS-200 300 HYP18SS-300 400 HYP18SS-400 Progressive Pull Bar Springs 6SULQJVDUH2'[WDOO Part No. Description HYP600-1200 600/1,200 HYP900-1300 900/1,300 Linear Conventional Pull Bar Spring HYP1225PB Spring is 5" O.D. x 6.625" free length. Detroit Locker Spring HYPLOCKERSPRG Directly replaces the stock spring in Ford 9" rear ends with Detroit Lockers. Composite Leaf Springs $HURVSDFHHSR[\PDWUL[FRPSRVLWHLV lighter than steel with quicker response, higher yield strength and better retention. Springs are molded to the exact shape to resist relaxing. Initial costs are greater, but composite springs ZLOOODVW¿YHWLPHVORQJHUWKDQVWHHO
5.0" O.D. 9.5" Tall Y Prefix
5.0" O.D. 9.9" Tall Y Prefix
5.0" O.D. 10.5" Tall Y Prefix
5.5" O.D. 9.5" Tall Z Prefix
5.5" O.D. 11" Tall Z Prefix
5.5" O.D. 12" Tall Z Prefix
Rate 300 350 375 400 425 450 475 500 525 550 575 600 625 650 700 750 800 850 900 950
HYP18Y0300
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— HYP18Z0300
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— HYP18Y0350-9.9 HYP18Y0350-10.5 HYP18Z0350
— HYP18Y0375-9.9
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—
— HYP18Y0400-9.9 HYP18Y0400-10.5 HYP18Z0400
— HYP18Y0425-9.9
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— HYP18Y0450-9.9 HYP18Y0450-10.5 HYP18Z0450
— HYP18Y0475-9.9 HYP18Y0500 HYP18Y0500-9.9
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— HYP18Z0500
HYP18Y0525
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—
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HYP18Y0550 HYP18Y0550-9.9
— HYP18Z0550
HYP18Y0575 HYP18Y0600 HYP18Y0625 HYP18Y0650 HYP18Y0700 HYP18Y0750 HYP18Y0800 HYP18Y0850 HYP18Y0900 HYP18Y0950
— — — — — — — — — — — — — — — — —
—
—
— HYP18Z0600
—
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— HYP18Z0650 — HYP18Z0700 — HYP18Z0750
— HYP18Z0800 HYP18Z0800-11 HYP18Z0800-12
— HYP18Z0850
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— HYP18Z0900 HYP18Z0900-11 HYP18Z0900-12
— HYP18Z0950
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1000 HYP18Y1000 1050 HYP18Y1050
— HYP18Z1000 HYP18Z1000-11 HYP18Z1000-12
— HYP18Z1050
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1100 1200 1300 1320 1440
— — — — —
— HYP18Z1100 HYP18Z1100-11 HYP18Z1100-12 — HYP18Z1200 HYP18Z1200-11 HYP18Z1200-12
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— HYP18Z1300-11 HYP18Z1300-12
— HYP18Z1320 — HYP18Z1440
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Rear Springs - Blue Powder Coated - Flat Both Ends
5.0" O.D. 11" Tall SN Prefix
5.0" O.D. 13" Tall S Prefix
5.0" O.D. 16" Tall SNU Prefix
5.0" O. 20" SNT
Rate
50 80 85
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— HYP18SNU-050 HYP18SNT-050
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— HYP18SNT-080
— HYP18SNU-085
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100 125 150 165 175 185 200 225 250 275 300 325 350 400 450
— HYP18S-100 HYP18SNU-100 HYP18SNT-100 HYP18SN-125 HYP18S-125 HYP18SNU-125 HYP18SNT-125 HYP18SN-150 HYP18S-150 HYP18SNU-150 HYP18SNT-150
— HYP18S-165
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HYP18SN-175 HYP18S-175 HYP18SNU-175
— HYP18S-185
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HYP18SN-200 HYP18S-200 HYP18SNU-200 HYP18SN-225 HYP18S-225 HYP18SNU-225 HYP18SN-250 HYP18S-250 HYP18SNU-250
Front Bolt Dia.
Rear Bolt Dia.
Part No.
Rate
Arch
Chrysler Composite Leaf Springs HYP10230 175 4.5" .625"
HYP18SN-275 HYP18S-275 HYP18SN-300 HYP18S-300 HYP18SN-325 HYP18S-325 HYP18SN-350 HYP18S-350
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.500" .500" .500" .500" .500" .500"
HYP10231 HYP10240
200 4.5" .625" 225 4.5" .625"
Chevy Camaro Composite Leaf Springs HYP11340 175 4.5" .562"
HYP18SN-400 HYP18SN-450
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HYP11342 HYP11344 HYP11348
200 4.5" .562" 225 4.5" .562" 250 4.5" .562"
.500" Corvette C4 Rear Composite Leaf Spring HYP12411HPS* 228 — — — *Signifies high-performance street, EZ Ride series spring.
Rear Pigtail Springs
Single Pigtail 5.5" O.D., 11" Tall SNP Prefix
Single Pigtail 5.5" O.D., 12" Tall SNP Prefix
Double Pigtail 7" O.D., 14" Tall SDP Prefix HYP18SDP-175 HYP18SDP-200 HYP18SDP-225
Rate 175 200 225 250 275 300
HYP18SNP11-175 HYP18SNP12-175 HYP18SNP11-200 HYP18SNP12-200 HYP18SNP11-225 HYP18SNP12-225 HYP18SNP11-250 HYP18SNP12-250 HYP18SNP11-275 HYP18SNP12-275
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Conventional Coil Springs Reference • 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 TECH TIP
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HYP18SNP12-300
HYP18SDP-300
440
CIRCLE TRACK 2021-22
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