{"product_id":"ast-coilovers-for-bmw-z4-m-convertible-coupe-e85-e86","title":"AST Coilovers for BMW Z4 M Convertible \u0026 Coupe (E85 \/ E86)","description":"\u003cp\u003eCoilovers for the Z4 M Convertible (E85) and Z4 M Coupe (E86). AST offer three kits for the Z4 M: the 5100 Clubracing, with coilovers and top mounts front and rear, and the 5200 2-Way and 5300 3-Way, which add separate compression adjustment and external reservoirs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree series: 5100 Clubracing, 5200 2-Way and 5300 3-Way\u003c\/li\u003e\n\u003cli\u003eZ4 M Convertible and Coupe, 2006 to 2008\u003c\/li\u003e\n\u003cli\u003eRide height and a 12-position rebound adjuster on all three\u003c\/li\u003e\n\u003cli\u003eChangeable spring rates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoose your series\u003c\/h3\u003e\n\u003cp\u003eEvery AST damper is a monotube: nothing inside can aerate or foam, which AST say keeps the valving responsive.\u003c\/p\u003e\n\u003ch4\u003e5100 Clubracing (AST ACC)\u003c\/h4\u003e\u003cp\u003eThe 1-way kit for cars that see track days as well as daily miles: inverted monotube coilovers front and rear, with top mounts at both ends. The front top mounts adjust for camber; the rear ones are solid. Spring rates can be changed to suit. Ride height adjusts, the rebound adjuster has 12 positions, and the dampers can be rebuilt.\u003c\/p\u003e\n\u003cp\u003eAST part number: ACC-B2203SD\u003c\/p\u003e\n\u003ch4\u003e5200 2-Way Motorsport (AST RIV)\u003c\/h4\u003e\u003cp\u003eRebound and compression damping each have their own adjuster, and ride height adjusts too. Compression damping sets how quickly the suspension moves in; rebound sets how quickly it extends again. The dampers work with external reservoirs, mounted remotely. The struts are inverted, which AST use because that design copes with heavy sideways loads and with braking. Where the car needs them, camber-adjustable front and solid rear top mounts are included. Spring rates can be changed, and the rebound adjuster has 12 positions. AST made it first of all for track driving.\u003c\/p\u003e\n\u003cp\u003eAST part number: RIV-B1010SD\u003c\/p\u003e\n\u003ch4\u003e5300 3-Way Motorsport (AST RAC)\u003c\/h4\u003e\u003cp\u003eThree separate damping adjusters - rebound, low-speed compression and high-speed compression - plus adjustable ride height. Low-speed compression looks after slow, gradual movement of the suspension; high-speed compression looks after sharp, hard hits. The dampers work with external reservoirs, mounted remotely. The struts are inverted, which AST use because that design copes with heavy sideways loads and with braking. Where the car needs them, camber-adjustable front and solid rear top mounts are included. Spring rates can be changed, and the rebound adjuster has 12 positions. AST's kit for the most committed circuit drivers.\u003c\/p\u003e\n\u003cp\u003eAST part number: RAC-B1010SD\u003c\/p\u003e\n\u003cp\u003eThe photos are AST's own sample shots of each series, not of the kit for your car, which is made for its suspension and differs in detail.\u003c\/p\u003e\n\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003e5100 Clubracing (AST ACC); 5200 2-Way Motorsport (AST RIV); 5300 3-Way Motorsport (AST RAC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAST part numbers\u003c\/th\u003e\n\u003ctd\u003eACC-B2203SD, RIV-B1010SD, RAC-B1010SD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ctable class=\"fitment-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eVersion\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eZ4 M\u003c\/td\u003e\n\u003ctd\u003eE85 Convertible\u003c\/td\u003e\n\u003ctd\u003e2006-2008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eZ4 M\u003c\/td\u003e\n\u003ctd\u003eE86 Coupe\u003c\/td\u003e\n\u003ctd\u003e2006-2008\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"AST Suspension","offers":[{"title":"5100 Clubracing","offer_id":57521031807356,"sku":"ACC-B2203SD","price":3480.0,"currency_code":"GBP","in_stock":true},{"title":"5200 2-Way","offer_id":57521031840124,"sku":"RIV-B1010SD","price":5064.0,"currency_code":"GBP","in_stock":true},{"title":"5300 3-Way","offer_id":57521031872892,"sku":"RAC-B1010SD","price":5376.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/9208\/4867\/files\/ast-suspension-ast-bmw-z4m-ast-coilovers-for-bmw-z4-m-convertible-coupe-e85-e86-1.jpg?v=1790777956","url":"https:\/\/fdracing.co.uk\/products\/ast-coilovers-for-bmw-z4-m-convertible-coupe-e85-e86","provider":"FD Racing","version":"1.0","type":"link"}