Cycle News

Cycle News Issue 48 December 4

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

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VOL. 55 ISSUE 48 DECEMBER 4, 2017 P73 out sacrificing good hold-up on the front end. In this test we also learned how sensitive this bike is to triple-clamp torque specs. It's tricky finding the sweet spot on this fork and once you're there, it's easy to throw it off balance again by simply over-torqueing one bolt. We had Precision Concepts dial in the shock, as well (even though we didn't have any specific gripes about it in stock form), and the result was a polished and well-balanced suspension package. As we mentioned before, the fork fix wasn't a cure-all, but a satisfying improvement. My hands/wrists are always my weakest link, so a harsh fork will spell an early end to my day on the bike, and that was often the case on the stock RM-Z. Flat landings or slap-downs were particularly punishing, sending a spike to my wrists that I could only endure for so long. After the Precision Concepts re-valve, that harshness in the initial stroke was largely worked out. It was particularly noticeable on bigger hits—the kind where you have time in the air to think, "This is going to sting." A few times I braced myself for the harsh re-entry, but was very pleased to find a much smoother landing. TEST RESULTS While the suspension spec was dialed in specifi- cally for me, we still had some of our heavier and more advanced test riders put in some laps aboard our "project" RM-Z to get more feedback on our upgrades. The results were unanimous. The power is a stunning improvement, and the suspension is a very positive change, but not what we'd call a miracle fix. The KYB PSF2 air fork has its limits, but a good re-valve, like the one we got from Precision Concepts, can go a long way in creating a good balance between the top-of-the-stroke plushness and the bottom-of-the-stroke support. This was a point of contention in our original tests, but the Precision Concepts re- valve allowed a greater level of rider comfort on the small chatter with-

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