{"id":29685,"date":"2022-02-03T19:13:20","date_gmt":"2022-02-03T10:13:20","guid":{"rendered":"https:\/\/www.decoboco.info\/en\/?p=29685"},"modified":"2026-09-24T13:46:03","modified_gmt":"2026-09-24T04:46:03","slug":"gs1200ss-inspection-chain-520-conversion-fluid-caliper-cleaning-sunstar-rear","status":"publish","type":"post","link":"https:\/\/www.decoboco.info\/en\/20220203\/everyday-events\/gs1200ss-inspection-chain-520-conversion-fluid-caliper-cleaning-sunstar-rear","title":{"rendered":"GS1200SS Inspection, Chain 520 Size Conversion, Fluid Exchange, Caliper Cleaning, Sunstar Rear Disc Replacement"},"content":{"rendered":"\n
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An overwhelming sense of volume… meaty.
A real man’s bike, the GS1200SS\u2014strange how prices have climbed.
This muffler was rolling around too, wasn’t it?

Already a 20-year-old bike… there’s a generation gap, you know. <\/p>\n\n\n\n\n\n\n\n

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DID finally released black (a while back).
Gold or black? It’s a tough choice. <\/p>\n\n\n\n

Front Sunstar, rear RK steel.
RK sprockets come in three lineup options.
Oil-cooled owners, please select RKM03PS 42\u201345T. <\/a>
Front is Sunstar 333-15T. <\/a>
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520 size while maintaining overall thickness. It’s really easy.
Back in the day we used to flow OEM parts… <\/p>\n\n\n\n

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We removed the rear aluminum nuts.
Go with reliable steel. <\/p>\n\n\n\n

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Lock nuts and lock washers replaced together. If you lock two or more, it’s quite secure. <\/p>\n\n\n\n

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When replacing brake discs, replace the bolts too. A lighter thread lock or liquid type is gentler on the wheel. <\/p>\n\n\n\n

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The inside of a customer’s fender gets looked at more than you’d think.
When you remove it, give it a quick spray and wipe it down. <\/p>\n\n\n\n

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We cleaned up the caliper support too. <\/p>\n\n\n\n

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The look is sleeker now.
Converting to 520 improves rolling resistance significantly, but the chain stretches a bit more easily.
As long as you can handle gentle operation and proper maintenance like oiling, there’s no problem. <\/p>\n\n\n\n

If you don’t oil it, ride hard, or race, stick with 530. <\/p>\n\n\n\n

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We chamfered the pad backing plate slightly. The return motion should be smoother… just a bit. <\/p>\n\n\n\n

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We cleaned the caliper and also cleaned up the pad springs.
The piston action is a bit stiff… dust seems to be causing trouble.

You might want to consider an OH or replacement of the brake master soon. <\/p>\n\n\n\n

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We replaced the fluid in all three locations. <\/p>\n\n\n\n

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We keep diaphragms in stock. We replaced it.
That’s quite an expansion, though. <\/p>\n\n\n\n

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We adjusted CO\/HC for the inspection.
That said, just moving the PS changes the numbers significantly.
It’s not a big deal\u2014the manual values aren’t always perfect either, so keep that in mind.

Everything comes down to how you present it. Off to the inspection tomorrow! <\/p>\n","protected":false},"excerpt":{"rendered":"

An overwhelming sense of volume… meaty. A real man’s bike, the GS1200SS\u2014strange how prices have climbed. This muffler was rolling around too, wasn’t it? Already a 20-year-old bike… there’s a generation gap, you know.<\/p>\n","protected":false},"author":2,"featured_media":29664,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pochipp_cv_data":"","swell_btn_cv_data":"","footnotes":""},"categories":[1924],"tags":[148,62,240,122],"class_list":["post-29685","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-everyday-events","tag-did","tag-gs1200ss","tag-sunstar-brake-disc","tag-vehicle-inspection"],"_links":{"self":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/29685","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/comments?post=29685"}],"version-history":[{"count":0,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/29685\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media\/29664"}],"wp:attachment":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media?parent=29685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/categories?post=29685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/tags?post=29685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}