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| 12-01-2014, 11:03 AM | #1 |
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Lieutenant
 
107
Rep 471
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AST 5100 coilovers - spring diameter and lengths needed
I'm going to replace the 10k/14k springs on my car with 7k/12k.
Does anyone know the correct ID mm and lengths required (front and rear)? Car is in storage so I can't go measure... Thanks! 
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08 Montego Blue 135i Coupe // Sport Package // Custom E30 tune // str8shot bluetooth enabled ECA // Walboro 255 inline pump // BMS downpipes // VRSF 7" FMIC // Injen intake // Berk ceramic exhaust // OEM 550i clutch // MFactory single mass flywheel // Vorshlag camber plates // Hotchkis FSB // Turner adjustable drop links // AST 5100 coilovers // Hawk HPS pads // Ti backing plates // Stoptech stainless brake lines // Turner 15mm spacers
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| 12-01-2014, 02:21 PM | #2 |
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aiming for 450.....
303
Rep 2,910
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Should be 60mm. My old 4100s ran a 60mm setup. I run 7" front and 9" rear with helper springs to maintain tension when suspension is not under load. Some places run 6" springs up front but that for me is too short a spring and I had the lower perch all the way up.
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| 12-04-2014, 04:43 PM | #4 | |
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Supreme Allied Commander
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Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com
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