{"product_id":"park-tool-desengrasante-cb-4-bio-chainbrite-16-fl-oz-472-ml-limpiador-biodegradable-para-cadenas-y-componentes","title":"Park Tool biodegradable chain degreaser \u0026 bike cleaner 16 fl oz — plant-based, safe for drivetrain","description":"\u003cstrong\u003ePark Tool CB-4 Bio ChainBrite is a 100% biodegradable, plant-based degreaser formulated to dissolve grease and grime from bicycle chains and components without harsh solvents.\u003c\/strong\u003e\n\nPark Tool CB-4 cleans drivetrain parts, derailleurs, cassettes, chainrings and other bike components while using plant-derived ingredients that break down naturally. Packaged in a 16 fl oz (472 ml) bottle with a flip-top cap, this formula is designed for home mechanics who want an effective, environmentally friendlier alternative to solvent-based cleaners. Regular cleaning with CB-4 helps keep parts free of abrasive grit and extends the effective life of lubricants and shifting components when paired with proper lubrication.\n\n\u003ch3\u003eHow quickly does CB-4 remove heavy grease and grime?\u003c\/h3\u003e\n\u003cp\u003eCB-4 targets sticky, baked-on grease and everyday road or trail dirt through a concentrated plant-based solvent blend. It loosens contaminants for fast rinsing or wiping, cutting down the time you spend scrubbing metal surfaces.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFormulated to penetrate and lift oil and grime from chains and cassettes.\u003c\/li\u003e\n\u003cli\u003eWorks on derailleurs, chainrings, bottom brackets (external), and pedals.\u003c\/li\u003e\n\u003cli\u003eReduces need for aggressive mechanical scrubbing in most cleaning jobs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe for bike finishes and seals?\u003c\/h3\u003e\n\u003cp\u003eCB-4 uses natural, biodegradable agents that are less aggressive than many petroleum-based degreasers, making it suitable for routine bike cleaning. As with any cleaner, avoid prolonged contact with painted decals and sensitive seals; test in a small area if unsure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlant-based formulation minimizes harsh solvent exposure to paint and anodized surfaces.\u003c\/li\u003e\n\u003cli\u003eAvoid soaking foam grips, leather saddles, and vulnerable rubber seals for extended periods.\u003c\/li\u003e\n\u003cli\u003eRinse or wipe off within minutes to protect finishes and components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use CB-4 for best drivetrain results?\u003c\/h3\u003e\n\u003cp\u003eApply CB-4 directly to the chain and components, allow a short dwell time to loosen grime, then agitate with a brush or chain-cleaning tool. Rinse or wipe thoroughly and allow parts to dry before applying a quality chain lubricant to restore smooth shifting.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse the flip-top lid for controlled pouring into chain-cleaner tool reservoirs or onto brushes.\u003c\/li\u003e\n\u003cli\u003eFor heavy buildup, repeat application and agitate with a stiff nylon brush.\u003c\/li\u003e\n\u003cli\u003eAlways relubricate chain after cleaning to prevent corrosion and wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes CB-4 a greener cleaning choice?\u003c\/h3\u003e\n\u003cp\u003eCB-4 is based on biodegradable, plant-derived ingredients rather than petroleum solvents, so it breaks down more readily in the environment. Its formulation balances cleaning performance with a reduced ecological footprint compared with conventional degreasers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e100% biodegradable and plant-based surfactants and solvents.\u003c\/li\u003e\n\u003cli\u003eDesigned to replace harsher solvent cleaners for regular bike maintenance.\u003c\/li\u003e\n\u003cli\u003eConcentrated enough for effective cleaning from a single 16 fl oz bottle for multiple uses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for? CB-4 Bio ChainBrite is intended for cyclists, home mechanics and shop technicians who want an effective drivetrain degreaser that favors biodegradable chemistry. It suits road, gravel and mountain bikers who perform regular maintenance and prefer a cleaner that removes heavy grime while being easier on the environment than many solvent-based alternatives. Combine CB-4 cleaning with a quality chain lubricant and routine maintenance to keep gears shifting smoothly and to reduce abrasive wear on drivetrain parts.\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use CB-4 on suspension parts and bearings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Avoid soaking internal bearings or suspension internals; use CB-4 for external surfaces and wipe off promptly to prevent seal swelling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to rinse after using CB-4?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Rinse or thoroughly wipe parts after cleaning, then dry and apply lubricant to protect the drivetrain and prevent corrosion.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Park Tool","offers":[{"title":"Default Title","offer_id":54591991906643,"sku":"B014LC7E1A","price":41.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1095\/4257\/2371\/files\/park-tool-botella-frente.jpg?v=1786752865","url":"https:\/\/findsworth.co.uk\/products\/park-tool-desengrasante-cb-4-bio-chainbrite-16-fl-oz-472-ml-limpiador-biodegradable-para-cadenas-y-componentes","provider":"Findsworth","version":"1.0","type":"link"}