{"id":101699,"date":"2026-07-28T12:01:05","date_gmt":"2026-07-28T04:01:05","guid":{"rendered":"https:\/\/www.motomaxsfr.com\/?p=101699"},"modified":"2026-07-28T12:01:07","modified_gmt":"2026-07-28T04:01:07","slug":"how-long-is-132-links-of-420-chain-428-vs-40-specs","status":"publish","type":"post","link":"https:\/\/www.motomaxsfr.com\/es\/how-long-is-132-links-of-420-chain-428-vs-40-specs\/","title":{"rendered":"How Long Is 132 Links Of 420 Chain? 428 vs 40 Specs"},"content":{"rendered":"
\n
\n

The 132-section 420 chain is just 66 inches (about 167.6cm) in length. It can be calculated in a second: 420 the pitch of the chain is fixed 1\/2 inch, 132 knots multiplied by 0.5 is its physical length.
In the current refit circle, many old irons like to lengthen the flat fork (rocker arm) for the car. After calculating the new length, in order to save the little broken silver, instead of buying a serious motorcycle metric chain, they run to buy a cheap ANSI #40 industrial chain. Listen to a sentence: Put the #40 chain used on this kind of agricultural machinery on a 428 or 520 transmission system that requires high speed. The huge torque of the engine will teach you to be a person in minutes-either bite the gear or break the chain directly. Next, I will use the hard core data of micrometer level to 1 you. Why is mixing these chains purely destroying the car.<\/p>\n\n\n\n

L.P.M. Formula: A tape measure is not needed to accurately calculate the length of the chain.<\/h2>\n\n\n\n

Measure the length of the chain, and insiders never use a tape measure. Professional refitting technicians use the \u201cL.P.M. formula\u201d (links \u00d7 pitch pitch = length Measurement), and each time the chain is cut, it can be exactly the same.
The so-called \u201cpitch\u201d is the most accurate distance between the center points of two adjacent pins. Whether it is a 420, 428 or #40 chain, their pitch is 1\/2 inch (0.5 inches) that cannot be touched. Therefore, if your kart or extended mini motorcycle needs 132 chains, this sum is the iron law: 132 \u00d7 0.5=66 inches.<\/p>\n\n\n\n

\"Please<\/figure>\n\n\n\n

The dead rule of the lengthened flat fork: the \u201c2:1\u201d rule<\/h3>\n\n\n\n

To lengthen the rear rocker arm of the motorcycle, how much should the chain be lengthened? This is not decided by pat your head. The dead data on the track prove that on a transmission system with a pitch of 1\/2 inch (such as 420 or 428), the chain must be increased by 2 knots for every 1 inch of extension of the flat fork.
In other words, if you lengthen the flat fork of the Honda Little Monkey (Grom) by 4 inches, you will have to buy a new chain with 8 more knots than the original factory. Cutting the chain with the naked eye? You\u2019ll only get a scrap metal that won\u2019t hang at all.<\/p>\n\n\n\n

428 Chain VS 40 Industrial Chain: Destructive Displacement from Roller Size<\/h2>\n\n\n\n

If you had to install the #40 industrial chain on a 428 motorcycle dental tray, I dare say that your custom dental tray will be completely useless within a few hours.
Why is there always a modified white confused by these two models? Because the pitch of 428 and #40 is 1\/2 inch, and the inner width is 5\/16 inch, which looks exactly the same to the naked eye. But the deadly difference is hidden in the diameter of the rollers. Rollers 428 motorcycle chains are 8.51mm (0.335 in). The rollers of the ANSI #40 industrial chain are small, only 7.92mm (0.312 inches).
The tooth valley (the groove between the teeth) of the motorcycle tooth disc cut out for the 428 chain is specially designed for the perfect wrapping of 8.51mm rollers. If you hang the #40 chain with a roller of only 7.92mm hard, there will be serious looseness. 1 the oil is accelerated, these smaller industrial rollers will hit the tooth tips of the tooth plate to death, abruptly knocking the gear into a sharp \u201chook shape\u201d. In order to save $20 to buy a tractor chain, and finally lost a hundred dollars of custom-made aluminum alloy back tooth plate, did you lose?<\/p>\n\n\n\n

Modelo de cadena<\/th>Pitch<\/th>Anchura interior<\/th>Di\u00e1metro del rodillo<\/th>Typical Application<\/th>Compatibility Notes<\/th><\/tr><\/thead>
420 Chain<\/td>1\/2 in (0.500 in)<\/td>1\/4 in (0.250 in)<\/td>Smaller roller size<\/td>Lightweight motorcycles, small engines<\/td>Different roller and width specifications; cannot be directly substituted with other 1\/2 in chains without checking sprocket design<\/td><\/tr>
428 Chain<\/td>1\/2 in (0.500 in)<\/td>5\/16 in (0.3125 in)<\/td>8.51 mm (0.335 in)<\/td>Motorcycle drive systems<\/td>Designed for sprockets with tooth valleys matched to 8.51 mm rollers; requires exact roller diameter matching<\/td><\/tr>
ANSI #40 Industrial Chain<\/td>1\/2 in (0.500 in)<\/td>5\/16 in (0.3125 in)<\/td>7.92 mm (0.312 in)<\/td>Industrial machinery, conveyors, equipment drives<\/td>Similar pitch and width to 428 but smaller rollers; incorrect fit on 428 sprockets causes looseness, tooth wear, and accelerated damage<\/td><\/tr>
520 Cadena<\/td>5\/8 in (0.625 in)<\/td>1\/4 in (0.250 in)<\/td>Larger motorcycle-grade roller<\/td>Medium\/high displacement motorcycles, racing applications<\/td>Requires matching 520 sprockets; physically incompatible with #40 industrial chain due to different pitch dimensions<\/td><\/tr>
ANSI #40 vs 520 Comparison<\/td>0.500 in vs 0.625 in<\/td>Different chain geometry<\/td>Different roller and pin alignment<\/td>Industrial vs motorcycle transmission systems<\/td>Cannot be mixed; forced installation causes chain riding on tooth tips, misalignment, jamming, and possible chain failure<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

520 chain VS 40 industrial chain: the physical level of absolute incompatibility<\/h2>\n\n\n\n

To make it clear to you: you can\u2019t physically hang the #40 industrial chain on the 520 motorcycle tooth plate.
Some messing technicians like to transplant large-displacement motorcycle engines (such as Yamaha R6 or Honda CRF450) to modified karts, but the rear axle of karts still uses the old #40 dental plate. This scheme rolls over in seconds because the pitch between the two is not in the same dimension at all. The 520 chain uses a huge 5\/8 inch (0.625 inch) pitch; while the #40 chain has a much shorter pitch, only 1\/2 inch (0.500 inch).
If you force a 1\/2 inch pitch #40 chain around a 5\/8 inch pitch 520 tray, after about two sections are rolled up, the pin shaft will not be able to line up with the tooth valley. The whole chain will ride directly on the tooth tip, and the transmission system will be stuck instantly. The moment you bounce off the clutch, the chain breaks directly. Listen up, for engine transplantation, your rear axle cone must be honestly replaced with a 520 specification that exactly matches the motorcycle\u2019s gearbox output shaft (Xiaofei).<\/p>\n\n\n\n