E90 Rear Brembo 4-piston Caliper Upgrade Kit
This kit features genuine Brembo calipers, made in Italy. We custom machine the calipers and add a pair of custom machined aluminum brackets. You simply bolt up these calipers to your BMW E9x car with a pair of 335i factory rotors.
You supply the rotors. Everything else is included!
Kit includes:
- Genuine Brembo Calipers
- CNC Machined and Anodized Aluminum Brackets
- Brembo Caliper Pins and Clips
- Brake Pads (options available)
- Stainless braided Teflon Brake Lines
Related Products
Quick View
{"id":6988311233,"title":"E90 Front Brembo 4-piston Caliper Upgrade Kit","handle":"e90frontbrembo4-pistoncaliperupgradekit","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThis kit features genuine Brembo calipers, made in Italy. We custom machine the calipers and add a pair of custom machined aluminum brackets. You simply bolt up these calipers to your BMW E9x car with a pair of 335i factory rotors.\u003cbr\u003e\u003cbr\u003eYou supply the rotors. Everything else is included!\u003cbr\u003e\u003cbr\u003eKit includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eGenuine Brembo Calipers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eCNC Machined and Anodized Aluminum Brackets\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eBrembo Caliper Pins and Clips\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eBrake Pads (options available)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eStainless braided Teflon Brake Lines\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2016-07-16T22:07:00-04:00","created_at":"2016-07-16T22:07:32-04:00","vendor":"RallyRoad","type":"","tags":["E90"],"price":109500,"price_min":109500,"price_max":109500,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":22021045249,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"E90 Front Brembo 4-piston Caliper Upgrade Kit","public_title":null,"options":["Default Title"],"price":109500,"weight":9979,"compare_at_price":null,"inventory_quantity":0,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/rallyroad.net\/cdn\/shop\/products\/E90_Front_Brake_Kit01_5b2779c5-9c26-458e-b3fa-c1a66b16d0f7.jpg?v=1468990182"],"featured_image":"\/\/rallyroad.net\/cdn\/shop\/products\/E90_Front_Brake_Kit01_5b2779c5-9c26-458e-b3fa-c1a66b16d0f7.jpg?v=1468990182","options":["Title"],"media":[{"alt":null,"id":161521664035,"position":1,"preview_image":{"aspect_ratio":1.493,"height":643,"width":960,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/E90_Front_Brake_Kit01_5b2779c5-9c26-458e-b3fa-c1a66b16d0f7.jpg?v=1468990182"},"aspect_ratio":1.493,"height":643,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/E90_Front_Brake_Kit01_5b2779c5-9c26-458e-b3fa-c1a66b16d0f7.jpg?v=1468990182","width":960}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThis kit features genuine Brembo calipers, made in Italy. We custom machine the calipers and add a pair of custom machined aluminum brackets. You simply bolt up these calipers to your BMW E9x car with a pair of 335i factory rotors.\u003cbr\u003e\u003cbr\u003eYou supply the rotors. Everything else is included!\u003cbr\u003e\u003cbr\u003eKit includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eGenuine Brembo Calipers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eCNC Machined and Anodized Aluminum Brackets\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eBrembo Caliper Pins and Clips\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eBrake Pads (options available)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"line-height: 1.4;\"\u003eStainless braided Teflon Brake Lines\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e"}
Quick View
{"id":7103184257,"title":"N54 Port Injection Kit","handle":"n54-port-injection-kit","description":"\u003ch4\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003eEvolution of Speed Port Injection Spacer Kits for the N54 are now available.\u003cbr\u003e\u003cbr\u003eJust like the intake manifold kits, the machining on these kits is second to none. EOSPEED has custom 7mm intake studs with a hex on the end for easy installation. No other kit has this kind of detail built into it.\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe fuel rail has an optional return fitting so it can be run as a dead end rail or return to your external fuel pressure regulator.\u003cbr\u003e\u003cbr\u003eFlow matched injector set, Stainless Steel Hardware, \u003cspan\u003eHard-coat Anodized Black, everything you have come to expect from EOSPEED.COM.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eYou can purchase the kit with or without the Split Second AIC Fuel Controller.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","published_at":"2016-07-23T11:54:00-04:00","created_at":"2016-07-23T11:56:41-04:00","vendor":"Evolution of Speed","type":"","tags":[],"price":54995,"price_min":54995,"price_max":54995,"available":false,"price_varies":false,"compare_at_price":129595,"compare_at_price_min":129595,"compare_at_price_max":129595,"compare_at_price_varies":false,"variants":[{"id":22339551297,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"N54 Port Injection Spacer Kit","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"N54 Port Injection Kit","public_title":null,"options":["Default Title"],"price":54995,"weight":2268,"compare_at_price":129595,"inventory_quantity":0,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_001.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/spacer_asm_001.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/INTAKE_STUDS_001.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/INTAKE_STUDS_002.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_002.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_003.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_004.jpg?v=1477422711","\/\/rallyroad.net\/cdn\/shop\/products\/Injectors_product_1_large_c666139b-d923-4b12-9f49-cd62602d6b1d.jpg?v=1477422711"],"featured_image":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_001.jpg?v=1477422711","options":["Title"],"media":[{"alt":null,"id":162664349731,"position":1,"preview_image":{"aspect_ratio":1.499,"height":667,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_001.jpg?v=1477422711"},"aspect_ratio":1.499,"height":667,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_001.jpg?v=1477422711","width":1000},{"alt":null,"id":162664382499,"position":2,"preview_image":{"aspect_ratio":1.502,"height":666,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/spacer_asm_001.jpg?v=1477422711"},"aspect_ratio":1.502,"height":666,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/spacer_asm_001.jpg?v=1477422711","width":1000},{"alt":null,"id":162664415267,"position":3,"preview_image":{"aspect_ratio":1.499,"height":667,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/INTAKE_STUDS_001.jpg?v=1477422711"},"aspect_ratio":1.499,"height":667,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/INTAKE_STUDS_001.jpg?v=1477422711","width":1000},{"alt":null,"id":162664448035,"position":4,"preview_image":{"aspect_ratio":1.502,"height":666,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/INTAKE_STUDS_002.jpg?v=1477422711"},"aspect_ratio":1.502,"height":666,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/INTAKE_STUDS_002.jpg?v=1477422711","width":1000},{"alt":null,"id":162664480803,"position":5,"preview_image":{"aspect_ratio":1.502,"height":666,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_002.jpg?v=1477422711"},"aspect_ratio":1.502,"height":666,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_002.jpg?v=1477422711","width":1000},{"alt":null,"id":162664513571,"position":6,"preview_image":{"aspect_ratio":1.499,"height":667,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_003.jpg?v=1477422711"},"aspect_ratio":1.499,"height":667,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_003.jpg?v=1477422711","width":1000},{"alt":null,"id":162664546339,"position":7,"preview_image":{"aspect_ratio":1.499,"height":667,"width":1000,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_004.jpg?v=1477422711"},"aspect_ratio":1.499,"height":667,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/SPACER_KIT_004.jpg?v=1477422711","width":1000},{"alt":null,"id":162664579107,"position":8,"preview_image":{"aspect_ratio":1.569,"height":306,"width":480,"src":"\/\/rallyroad.net\/cdn\/shop\/products\/Injectors_product_1_large_c666139b-d923-4b12-9f49-cd62602d6b1d.jpg?v=1477422711"},"aspect_ratio":1.569,"height":306,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/products\/Injectors_product_1_large_c666139b-d923-4b12-9f49-cd62602d6b1d.jpg?v=1477422711","width":480}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch4\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003eEvolution of Speed Port Injection Spacer Kits for the N54 are now available.\u003cbr\u003e\u003cbr\u003eJust like the intake manifold kits, the machining on these kits is second to none. EOSPEED has custom 7mm intake studs with a hex on the end for easy installation. No other kit has this kind of detail built into it.\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe fuel rail has an optional return fitting so it can be run as a dead end rail or return to your external fuel pressure regulator.\u003cbr\u003e\u003cbr\u003eFlow matched injector set, Stainless Steel Hardware, \u003cspan\u003eHard-coat Anodized Black, everything you have come to expect from EOSPEED.COM.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eYou can purchase the kit with or without the Split Second AIC Fuel Controller.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e"}
$100.00
$75.00
Quick View
{"id":7647610634314,"title":"Rally Road BMW Oil Fill Cap","handle":"rally-road-bmw-oil-fill-cap","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eNo more drilling valve covers and installing crankcase vent fittings. We have designed this Oil Fill Cap with a AN10 port in the top to allow our low profile AN10 swivel fitting to be installed.\u003cbr\u003e\u003cbr\u003eThe Cap was machine on a 5-axis CNC from 6061-T6 aluminum for a nice solid feel. The machined retainer bar and expanding assembly ring are made from 316 stainless steel. The same goes for our AN10 swivel fitting. It's made from 6061 aluminum and the body is 316 stainless. All orings are Viton for extreme long life.\u003cbr\u003e\u003cbr\u003eYou can leave your catch can hose attached to the cap and still easily remove the cap to add oil. The fitting has a nice smooth rotation while still keeping a liquid tight seal. This cap fits \u003cspan style=\"text-decoration: underline;\"\u003eboth\u003c\/span\u003e the Plastic Valve Covers and the Magnesium (sometimes thought to be Aluminum) valve covers. We have personally tested it on the M50, M52, S50 and S52. It may fit other BMW engines (e.g. S54) as the OEM oil caps can sometimes be interchangeable.\u003c\/p\u003e\n\u003cp\u003eIncluded is (1) Oil Fill Cap and (1) AN10 swivel fitting as pictured.\u003cbr\u003e\u003cbr\u003eInstall Tip: Use a little oil to lubricate the rubber seat on the underside of the cap and press down when turning. This will help it rotate into locking position.\u003c\/p\u003e","published_at":"2024-05-09T18:49:02-04:00","created_at":"2024-05-09T18:49:02-04:00","vendor":"RallyRoad","type":"","tags":["E36","E36 M3","Forced Induction","M42","M44","M50","M52","Oil","S52","turbo"],"price":7500,"price_min":7500,"price_max":7500,"available":true,"price_varies":false,"compare_at_price":10000,"compare_at_price_min":10000,"compare_at_price_max":10000,"compare_at_price_varies":false,"variants":[{"id":41225289564234,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"Rally Road Oil Fill Cap","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Rally Road BMW Oil Fill Cap","public_title":null,"options":["Default Title"],"price":7500,"weight":408,"compare_at_price":10000,"inventory_quantity":418,"inventory_management":"shopify","inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/rallyroad.net\/cdn\/shop\/files\/fillcap3.jpg?v=1715296053","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap1.jpg?v=1715296053","\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap2.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap4.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap5.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap6.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap7.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap11.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52_002.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap9.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap10.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap12.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/fillcap8.jpg?v=1716223483","\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52_001.jpg?v=1716223475"],"featured_image":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap3.jpg?v=1715296053","options":["Title"],"media":[{"alt":null,"id":23554493186122,"position":1,"preview_image":{"aspect_ratio":0.843,"height":600,"width":506,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap3.jpg?v=1715296053"},"aspect_ratio":0.843,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap3.jpg?v=1715296053","width":506},{"alt":null,"id":23554493120586,"position":2,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap1.jpg?v=1715296053"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap1.jpg?v=1715296053","width":600},{"alt":null,"id":23626188259402,"position":3,"preview_image":{"aspect_ratio":1.001,"height":749,"width":750,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52.jpg?v=1716223483"},"aspect_ratio":1.001,"height":749,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52.jpg?v=1716223483","width":750},{"alt":null,"id":23554493153354,"position":4,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap2.jpg?v=1716223483"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap2.jpg?v=1716223483","width":600},{"alt":null,"id":23554493218890,"position":5,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap4.jpg?v=1716223483"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap4.jpg?v=1716223483","width":600},{"alt":null,"id":23554493251658,"position":6,"preview_image":{"aspect_ratio":1.0,"height":800,"width":800,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap5.jpg?v=1716223483"},"aspect_ratio":1.0,"height":800,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap5.jpg?v=1716223483","width":800},{"alt":null,"id":23554493284426,"position":7,"preview_image":{"aspect_ratio":1.36,"height":800,"width":1088,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap6.jpg?v=1716223483"},"aspect_ratio":1.36,"height":800,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap6.jpg?v=1716223483","width":1088},{"alt":null,"id":23554493317194,"position":8,"preview_image":{"aspect_ratio":1.477,"height":600,"width":886,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap7.jpg?v=1716223483"},"aspect_ratio":1.477,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap7.jpg?v=1716223483","width":886},{"alt":null,"id":23554493448266,"position":9,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap11.jpg?v=1716223483"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap11.jpg?v=1716223483","width":600},{"alt":null,"id":23626188324938,"position":10,"preview_image":{"aspect_ratio":1.0,"height":750,"width":750,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52_002.jpg?v=1716223483"},"aspect_ratio":1.0,"height":750,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52_002.jpg?v=1716223483","width":750},{"alt":null,"id":23554493382730,"position":11,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap9.jpg?v=1716223483"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap9.jpg?v=1716223483","width":600},{"alt":null,"id":23554493415498,"position":12,"preview_image":{"aspect_ratio":1.333,"height":600,"width":800,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap10.jpg?v=1716223483"},"aspect_ratio":1.333,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap10.jpg?v=1716223483","width":800},{"alt":null,"id":23554493481034,"position":13,"preview_image":{"aspect_ratio":1.377,"height":600,"width":826,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap12.jpg?v=1716223483"},"aspect_ratio":1.377,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap12.jpg?v=1716223483","width":826},{"alt":null,"id":23554493349962,"position":14,"preview_image":{"aspect_ratio":1.333,"height":600,"width":800,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap8.jpg?v=1716223483"},"aspect_ratio":1.333,"height":600,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/fillcap8.jpg?v=1716223483","width":800},{"alt":null,"id":23626188292170,"position":15,"preview_image":{"aspect_ratio":1.0,"height":750,"width":750,"src":"\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52_001.jpg?v=1716223475"},"aspect_ratio":1.0,"height":750,"media_type":"image","src":"\/\/rallyroad.net\/cdn\/shop\/files\/cap_S52_001.jpg?v=1716223475","width":750}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eNo more drilling valve covers and installing crankcase vent fittings. We have designed this Oil Fill Cap with a AN10 port in the top to allow our low profile AN10 swivel fitting to be installed.\u003cbr\u003e\u003cbr\u003eThe Cap was machine on a 5-axis CNC from 6061-T6 aluminum for a nice solid feel. The machined retainer bar and expanding assembly ring are made from 316 stainless steel. The same goes for our AN10 swivel fitting. It's made from 6061 aluminum and the body is 316 stainless. All orings are Viton for extreme long life.\u003cbr\u003e\u003cbr\u003eYou can leave your catch can hose attached to the cap and still easily remove the cap to add oil. The fitting has a nice smooth rotation while still keeping a liquid tight seal. This cap fits \u003cspan style=\"text-decoration: underline;\"\u003eboth\u003c\/span\u003e the Plastic Valve Covers and the Magnesium (sometimes thought to be Aluminum) valve covers. We have personally tested it on the M50, M52, S50 and S52. It may fit other BMW engines (e.g. S54) as the OEM oil caps can sometimes be interchangeable.\u003c\/p\u003e\n\u003cp\u003eIncluded is (1) Oil Fill Cap and (1) AN10 swivel fitting as pictured.\u003cbr\u003e\u003cbr\u003eInstall Tip: Use a little oil to lubricate the rubber seat on the underside of the cap and press down when turning. This will help it rotate into locking position.\u003c\/p\u003e"}