{"product_id":"csk-bmw-b58-rear-box-delete-f20-f21-m140i","title":"CSK Exhaust Axle-Back Straight Pipe for BMW M140i F20\/F21 (B58) – Backbox\/Rear Box\/Muffler\/Silencer Delete Rear Section | 1 Series Performance Exhaust Upgrade | 304 Stainless, TIG Welded, 3.5in Tips | OPF\/GPF Compatible | CSK002","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003ch2\u003eCSK002 Axle-Back Straight Section for BMW M140i F20 F21 | 304 Stainless | TIG Welded | 3.5 inch Tips | OPF and GPF Compatible\u003c\/h2\u003e\n  \n  \u003cp\u003e\n    Give your BMW 1 Series M140i the soundtrack it deserves. The CSK002 axle-back straight section replaces the end silencer on the B58-powered F20 and F21, unlocking a deeper, more assertive tone and a sharper, sportier character at a price that makes sense. Crafted from premium 304-grade stainless steel and expertly TIG welded with full back purge, this tail section is built for longevity and clean flow. Finished with 3.5 inch tips for that purposeful OEM plus look.\n  \u003c\/p\u003e\n  \n  \u003cp\u003e\n    We have run this setup on our own cars and installed it for many customers. Feedback has been consistently excellent, with owners praising the richer note, enhanced presence and quality of the fabrication. If you are hunting for a straightforward M140i sound upgrade that looks right and lasts, this is the one.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eKey features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eB58 axle-back straight pipe for BMW 1 Series M140i F20 and F21\u003c\/li\u003e\n    \u003cli\u003ePremium 304 stainless steel construction for corrosion resistance and durability\u003c\/li\u003e\n    \u003cli\u003eExpert TIG welding with back purging for strong, clean internal welds\u003c\/li\u003e\n    \u003cli\u003e3.5 inch tailpipes for an OEM plus appearance and snug rear bumper fit\u003c\/li\u003e\n    \u003cli\u003eDesigned to free up exhaust flow and deliver a deeper, louder, more engaging note\u003c\/li\u003e\n    \u003cli\u003eOPF and GPF friendly configuration\u003c\/li\u003e\n    \u003cli\u003ePart number: CSK002\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW 1 Series F20 M140i 5 Door Hatchback (B58) from April 2015 to present\u003c\/li\u003e\n    \u003cli\u003eBMW 1 Series F21 M140i 3 Door Hatchback (B58) from December 2015 to present\u003c\/li\u003e\n    \u003cli\u003eCompatible with OPF and GPF models\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eWhy enthusiasts choose CSK002\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eAxle-back straight-through rear section, silencer delete, tail section upgrade\u003c\/li\u003e\n    \u003cli\u003eM140i sound mod that enhances tone and character without unnecessary complexity\u003c\/li\u003e\n    \u003cli\u003eHigh quality materials and welding for a product that performs and lasts\u003c\/li\u003e\n    \u003cli\u003eGreat value alternative to full cat-back systems\u003c\/li\u003e\n    \u003cli\u003eTrusted by our team and our customers for fit, finish and sound\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eManufacturing and lead time\u003c\/h3\u003e\n  \u003cp\u003e\n    Made to order by CSK Exhaust. Please allow manufacturing time prior to dispatch.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eProfessional installation\u003c\/h3\u003e\n  \u003cp\u003e\n    Professional fitting is recommended. MJ Modifications in Warwickshire offer in-house installation. For a fitting quote, email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Ensure the part is fitted by a professional. If the fit is not perfect, remove and return the item before starting the vehicle.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eCompatibility check before dispatch\u003c\/h3\u003e\n  \u003cp\u003e\n    To confirm fitment for your vehicle, we run a compatibility check before shipping. Please provide your UK registration or the last 7 digits of your VIN at checkout.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eManufacturer and warranty\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e CSK Exhaust\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months CSK manufacturer warranty\u003c\/p\u003e\n  \n  \u003ch3\u003eSearch-friendly terms\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW M140i straight pipe, M140i axle back, BMW 1 Series B58 sound upgrade, M140i silencer delete, end can delete, M140i tailpipe upgrade, BMW F20 F21 exhaust tail section, B58 rear section, M140i performance exhaust mod, 3.5 inch tips M140i, OPF safe exhaust, GPF safe exhaust, CSK002, stainless M140i exhaust, M140i sound improvement, BMW 1 Series performance exhaust, F20 M140i rear section, F21 M140i rear section.\n  \u003c\/p\u003e\n  \n\u003c\/div\u003e","brand":"CSK Exhaust","offers":[{"title":"Default Title","offer_id":55975100023170,"sku":null,"price":399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/CSKBMWB58REARBOXDELETEF20F21M140I_01_1946x_379a9b70-d77e-49a6-9310-ddc00ccde01f_1024x1024_2x__1_-transformed.webp?v=1763320296","url":"https:\/\/mjmodifications.co.uk\/products\/csk-bmw-b58-rear-box-delete-f20-f21-m140i","provider":"MJ Modifications","version":"1.0","type":"link"}