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+--- Thread: F4i front brake vs. 900rr's? (/showthread.php?tid=33362)
F4i front brake vs. 900rr's? - Graveyard - 08-12-2026
\r\n \r\n some people kill it with a stock F4i master, taht being said if you want to upgrade i\'d get a radial master off of a newer bike!\r\n
F4i front brake vs. 900rr's? - Joe Slow - 08-12-2026
\r\n \r\n Nothing wrong with f4i master. Seems a bit more spongey without braided brake lines but with them it has no issues. Run it myself without braided lines and if properly bled works a charm!\r\n
F4i front brake vs. 900rr's? - GIL with 1 L - 08-12-2026
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What is it that you are trying to accomplish\r\n
Quote:
\r\n | \r\n \r\n \r\n Originally Posted by Petomaani\r\n \r\n  \r\n Is there any other difference in F4i vs. 900rr\'s master front brake cylinder than internal/external brake resevoir? Any idea of those master cylinders piston diameter etc? \r\n \r\n \r\n \r\nJust wondering if I\'d put 900rr\'s brake perch into my F4i... \r\n \r\n \r\nEDIT: 900rr is -97 (SC33) and F4i is -05. F4i\'s MC is 16mm. | \r\n
F4i front brake vs. 900rr's? - Petomaani - 08-12-2026
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I saw few pics of F4i with external front brake resevoir -> thinked that original perch is garbage Quote:
\r\n | \r\n \r\n \r\n Originally Posted by GIL with 1 L\r\n \r\n \r\n What is it that you are trying to accomplish \r\n \r\n | \r\n
I also have -97 900rr as a part donator already.\n
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\nI\'m building FF stuntbike of my F4i and external front brake resevoir would be good with FF... Also found that -97 900rr\'s MC is 14mm instead of F4i\'s 16mm, just thinking how does it change the feel?\r\n
F4i front brake vs. 900rr's? - da Liks - 08-12-2026
\r\n \r\n its softer, and i def dont like it.. 16mm axial all the way!\r\n
F4i front brake vs. 900rr's? - Petomaani - 08-12-2026
\r\n \r\n Ok, I think that I\'ll leave it that way and get a radial perch in the future if necessary. Thanks!\r\n
F4i front brake vs. 900rr's? - anarchist35 - 08-12-2026
\r\n \r\n a 954rr master works great on the cheep for replacement, and has a remote reservoir. they are also 11/16 i believe (which is almost the same as 16mm) and work well on your calipers\r\n
F4i front brake vs. 900rr's? - vollrath - 08-12-2026
\r\n \r\n Why would you want the external reservoir? I had an external reservoir on my bike and it got torn off when it rolled so now i\'m running a front master with the built in res. It seems more bullet proof, whats the plus for the external?\r\n
F4i front brake vs. 900rr's? - Petomaani - 08-12-2026
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Just tought if there would be any advantage for changing 900rr\'s perch and external resevoir would be easier to place with FF. Quote:
\r\n | \r\n \r\n \r\n Originally Posted by vollrath\r\n \r\n \r\n Why would you want the external reservoir? I had an external reservoir on my bike and it got torn off when it rolled so now i\'m running a front master with the built in res. It seems more bullet proof, whats the plus for the external? \r\n \r\n | \r\n
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\nBut with this information i got I\'ll go with the stoch perch.\r\n
F4i front brake vs. 900rr's? - Petomaani - 11-01-2011
Is there any other difference in F4i vs. 900rr's master front brake cylinder than internal/external brake resevoir? Any idea of those master cylinders piston diameter etc?
Just wondering if I'd put 900rr's brake perch into my F4i...
EDIT: 900rr is -97 (SC33) and F4i is -05. F4i's MC is 16mm.