{"id":3586,"date":"2026-04-03T06:50:35","date_gmt":"2026-04-03T06:50:35","guid":{"rendered":"https:\/\/motorcyclechain.top\/?post_type=product&p=3586"},"modified":"2026-04-03T06:50:38","modified_gmt":"2026-04-03T06:50:38","slug":"420-standard-motorcycle-chain-12-700mm-pitch-15-6-kn","status":"publish","type":"product","link":"https:\/\/motorcyclechain.top\/et\/product\/420-standard-motorcycle-chain-12-700mm-pitch-15-6-kn\/","title":{"rendered":"420 Standard mootorrattakett | Samm 12,700 mm, 15,6 kN"},"content":{"rendered":"
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Toote \u00fclevaade<\/h2>\n
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The 420 motorcycle chain<\/strong> is a roller drive chain with a 12.700 mm pitch and 6.35 mm inner width \u2014 the narrowest and lightest of the commonly-used 1\/2-inch pitch family. It occupies the lightest end of the standard motorcycle chain spectrum, designed for engines where output is moderate and where minimising rotating mass and chain weight genuinely contributes to overall machine performance. At 0.57 kg\/m and 15.6 kN tensile strength, the 420 handles the torque range of 50cc to approximately 125cc four-stroke engines with comfortable headroom.<\/p>\n

\"420<\/p>\n

The 420 pitch is standard fitment on most 50cc mopeds, entry-level 125cc motorcycles, many off-road dirt bikes in the 50\u2013110cc class, and a wide variety of ATVs and smaller recreational off-road vehicles. Its light weight is genuinely beneficial on these machines \u2014 a 420 chain is measurably lighter than a 428 or 520 unit, and on a 70kg machine with a 4kW engine, that matters more than on a 200kg touring bike with a 60kW engine.<\/p>\n<\/div>\n

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Spetsifikatsioonid<\/h2>\n
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Keti nr.<\/th>\nSamm (mm)<\/th>\nP\u00f5\u00f5sa t\u00fc\u00fcp<\/th>\nLaius (mm)<\/th>\nTihvti l\u00e4bim\u00f5\u00f5t (mm)<\/th>\nTihvti pikkus (mm)<\/th>\nRulli l\u00e4bim\u00f5\u00f5t (mm)<\/th>\nPlaadi T sisemine l\u00e4bim\u00f5\u00f5t (mm)<\/th>\nPlaadi T v\u00e4lisl\u00e4bim\u00f5\u00f5t (mm)<\/th>\nT\u00f5mbetugevus (kN)<\/th>\nKaal (kg\/m\u00b2)<\/th>\n<\/tr>\n<\/thead>\n
420<\/td>\n12.700<\/td>\nK\u00f5verdunud<\/td>\n6.35<\/td>\n3.96<\/td>\n14.70<\/td>\n7.77<\/td>\n1.50<\/td>\n1.50<\/td>\n15.6<\/td>\n0.57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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420 vs 428 vs 520 \u2014 Choosing the Right Pitch<\/h2>\n
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All three pitches belong to the 12.70 mm (1\/2 inch) pitch family but carry different inner widths and consequently different roller contact areas. The pitch number encodes both pitch (first two digits: “42” = 4\/8 inch \u00d7 10 = 12.7 mm; “52” = 5\/8 inch \u00d7 10 = 15.875 mm) and width class (last two digits). For bikes currently running a 420, attempting to fit a 428 or 520 requires sprocket replacement \u2014 the sprockets are not interchangeable between inner width families. Confirm your existing chain’s stamped number before ordering any replacement.<\/p>\n<\/div>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Spetsifikatsioon<\/th>\n420 (This Chain)<\/th>\n428<\/th>\n520<\/th>\n<\/tr>\n<\/thead>\n
Samm (mm)<\/td>\n12.700<\/td>\n12.700<\/td>\n15.875<\/td>\n<\/tr>\n
Inner width (mm)<\/td>\n6.35<\/td>\n7.85<\/td>\n6.35<\/td>\n<\/tr>\n
Roller diameter (mm)<\/td>\n7.77<\/td>\n8.51<\/td>\n10.16<\/td>\n<\/tr>\n
Tensile strength (kN)<\/td>\n15.6<\/td>\n17.8<\/td>\n26.5<\/td>\n<\/tr>\n
Kaal (kg\/m\u00b2)<\/td>\n0.57<\/td>\n0.71<\/td>\n0.91<\/td>\n<\/tr>\n
Typical engine displacement<\/td>\n50\u2013125 cm\u00b3<\/td>\n125\u2013250 cm\u00b3<\/td>\n250\u2013600 cm\u00b3<\/td>\n<\/tr>\n
Common applications<\/td>\nMopeds, mini dirt bikes, small ATVs<\/td>\n125\u2013250cc street, off-road<\/td>\nMid-range sport and naked bikes<\/td>\n<\/tr>\n
Sprocket interchangeability<\/td>\n420 sprockets only<\/td>\n428 sprockets only<\/td>\n520 sprockets only<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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The 420’s narrower width versus the 428 (6.35 vs 7.85 mm inner) is the most significant physical difference between the two same-pitch options. Both use 12.70 mm pitch \u2014 and that’s the only dimension that matters for sprocket mesh \u2014 but the 420’s narrower roller means it will not seat correctly in a 428 sprocket’s tooth spacing. Always check whether your sprockets are stamped 420 or 428 before ordering, especially on bikes where previous owners may have upgraded the mootorratta kett<\/strong><\/a> without replacing the sprockets.<\/p>\n<\/div>\n

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Advantages and Trade-offs of the 420<\/h2>\n
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The 420 pitch occupies a clear niche. Understanding both what it does well and where its limits are helps ensure you’re choosing the right specification for your actual riding needs, not simply defaulting to a “bigger is better” upgrade that adds weight without benefit.<\/p>\n<\/div>\n

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Where the 420 works well<\/h3>\n