20 Inch Bike Shifter Types: M315 and RV200 Need Exact Suffixes

2026-11-07

Comparing 20 inch bike shifter types means distinguishing the control family from the exact part code. Kross names Shimano M315 on the Liftie 20 X and Shimano RV200 on the Hexagon Mini 1.0. Shimano's own records describe particular seven- and six-speed versions of those families, which help frame a useful question without proving what is installed on every delivered bicycle.

20 inch bike shifter types: two exact reference models

Shimano identifies SL-M315-7R as RAPIDFIRE PLUS with seven rear speeds. Its SL-RV200-6R record identifies REVOSHIFT with six rear speeds. These full model codes carry more information than the shorter M315 and RV200 entries on the Kross pages.

The references therefore give a buyer concrete control names to discuss. They do not authorize replacing a six-speed shifter with a seven-speed one, and they do not establish that a familiar-looking control has the same internal requirements. Keep the complete code visible when asking a supplier to identify the offered part.

Do not silently add the suffix to the bicycle listing

The Liftie's seven-speed description is consistent with the speed count in Shimano's seven-speed reference. That is useful corroborating context, but it is still not a photograph or inspection of an installed SL-M315-7R. The same distinction applies to the Hexagon's six-speed entry and the SL-RV200-6R reference.

Ask the seller to confirm the actual control code and provide the corresponding operating information. A response that repeats only the bicycle's gear count leaves the identification question unanswered. A change of component on an individual bicycle should be recorded as a change, rather than concealed by retaining the expected family name.

Compare the interface the rider will actually encounter

Use the Liftie 20 X product record to identify the example being discussed. Ask for a demonstration of its actual control arrangement at handover. This is more precise than assuming that prior experience with another geared bicycle makes an unfamiliar control immediately understandable.

Shimano separately lists compatible rear-derailleur types for the two reference controls: MTB seven-speed and MTB six-speed respectively. Those scoped entries are not a universal parts-mixing rule. No cable adjustment, replacement sequence or compatibility approval is supplied here.

The 20-inch collection helps compare complete bicycles; the Kross background article explains the wider range. For a control enquiry, retain both the complete bicycle and fitted component identities.

Two children on a forest path, the nearer on a balance bike and the farther on a pedal bicycle; models and wheel sizes unknown — Two children on a forest path: the foreground child uses a balance bike and the farther child a pedal bicycle. Brands, models and wheel sizes are unknown. Related riding context, not a Kross Liftie or Hexagon, a current specification, fit assessment or riding-permission demonstration. Photograph: Martin Vorel. Photograph source (https://libreshot.com/kids-on-a-bike-ride/); Creator (https://martinvorel.com/); CC0 license (https://creativecommons.org/publicdomain/zero/1.0/).

FAQ

What does Shimano call SL-M315-7R?

Its current record calls the shifter type RAPIDFIRE PLUS and lists seven rear speeds.

What does the SL-RV200-6R record say?

It identifies REVOSHIFT and six rear speeds. That information belongs to the exact referenced model.

Does Kross's short M315 label prove the full installed code?

No. Obtain the fitted component's full identity before relying on variant-specific instructions or ordering a replacement.

Sources

Kross-LIFTIE20X-current (https://kross.pl/liftie-20-x-granatowy-srebrny-polysk)
Kross-HEXAGONMINI1-current (https://kross.pl/hexagon-mini-1-0-czerwony-bialy-polysk)
Shimano-M3157R-current (https://productinfo.shimano.com/en/product/SL-M315-7R)
Shimano-RV2006R-current (https://productinfo.shimano.com/en/product/SL-RV200-6R)

Photograph credits and permissions

Photograph 1

Original title: Kids on a bike ride; embedded IPTC title: children on bike

Creator: Martin Vorel; creator URI: https://martinvorel.com/

Copyright notice: No separate copyright notice supplied for this LibreShot photo; source names Martin Vorel as its photographer.

Original source URI: https://libreshot.com/kids-on-a-bike-ride/

License / permission: CC0

License / permission URI: https://creativecommons.org/publicdomain/zero/1.0/

Modification notice: Downloaded full-size source JPEG unchanged here. Source JPEG retains Nikon EXIF, Martin Vorel artist/IPTC title and Adobe Photoshop Camera Raw 9.6.1 (Macintosh) processing history.

Source disclaimer: LibreShot explicitly identifies its photographs as CC0 and permits free commercial use. Its supplied Public domain license URI https://creativecommons.org/licenses/publicdomain/ and CC0-labelled URI https://creativecommons.org/licenses/publicdomain/deed.en refer to the retired Copyright-Only Dedication/Public Domain Certification 1.0 US, https://creativecommons.org/publicdomain/certification/1.0/us/; this link-label conflict is preserved. LibreShot prohibits bulk redistribution on similar stock-photo sites and hotlinking; no warranties or guaranteed model release. Other rights may apply; no person, brand or organisation endorses this article. Historical contextual photograph, not a Kross Liftie/Hexagon configuration, numerical specification, maintenance, fit or safety proof.