International Dealer News 174 Aug/Sep 2023 IDN172 Aug/Sep 2023 | Page 41

MIVV - Yamaha R7

Italian exhaust specialist MIVV offers several full system replacement options for Yamaha ' s popular , naked-style MT-07 derived , " entry level " race replica 689 cc twin-cylinder " R " - from complete systems approved for the road to those developed specifically for the track . Starting with its race-derived , Euro 5 compliant highposition SR-1 complete exhaust with stainless steel collectors and configuration-specific muffler . Available with a black titanium body or with a natural finish , the SR-1 line is lighter than the stock system it replaces and is mainly dedicated to superbikes and hyper-nakeds . This version of the silencer features a hexagonalshaped titanium body with a black finish and carbon end cap with a twill weave capable of withstanding the high temperature stresses typical of the racing world . MIVV quotes + 5.90 hp on maximum power , at 9,000 rpm ; + 3.50 Nm on maximum torque , at 6,500 rpm ; -0.50 kg on weight . The graph taken on the bench shows a continuous increase in performance starting from 3,000 rpm . To " confirm " Euro 5 homologation , the MIVV ACC . 077 . A1 catalyst must also be purchased . A second complete Euro 5 approved exhaust , the GP PRO features semi hand-crafted TIG welding , a compact and essential design and an aggressive sound . The exhaust outlet pipe is equipped with a removable protective grill that hides the dB killer . The central body is in carbon with a glossy finish . MIVV quotes + 2.40 hp on maximum power at 8,600 rpm ; + 0.20 Nm on maximum torque , at 6,400 rpm ; -1.60 kg of weight reduction . The graph shows a significant increase in torque from 3,500 to 4,500 rpm and again from 5,000 to 6,400 rpm . The power flows side by side up to 7,000 rpm and then increases . MIVV catalyst also needed to meet Euro 5 . MIVV has two non-homologated race-only complete systems for the R7 . A complete " Ready-to-Race " high position system with pipes made entirely of stainless steel , ( steel version ), which is essentially an additional new version of its SR-1 , previously only available with a titanium body . MIVV quotes + 5.20 hp on maximum power , at 9,100 rpm ; + 5.50 Nm on maximum torque , at 6,300 rpm ; -2.30 kg saved with the complete system . The dyno chart analysis highlights how much this pairing favours the " pull ", which rises steadily up to its maximum peak from below 4,000 rpm . Finally , a non-homologated MK3 version which is described as offering " the perfect R7 track solution with a very good setting in terms of torque and power delivery . The stainless steel manifolds are made for the standard ( low ) positioning , allowed by the compact dimensions of the MK3 muffler . Its design comes from the exhausts made for the MotoGP world championship and it is also recognised for the captivating sound it manages to unleash . The MK3 version used here has a central body in glossy carbon which , together with the protective grill on the outlet end cap , gives the product a particularly high-tech look . The outstanding performance advantages are + 7.00 hp on maximum power at 8,600 rpm ; + 5.00 Nm on the maximum torque , at 6,300 rpm and a good -3.80 kg of weight savings . The performance confirmed by the dyno ( always measured at the wheel ) is really important - the increase in torque and power is continuous from 3,000 rpm .
www . idnmag . com
SR-1 complete exhaust
MIVV S . P . A . Sant ' Omero ( TE ), ITALY Tel : + 39 0861 8120237 moto @ mivv . it www . mivv . com
PRO GuIDe
GP PRO
MK3
INTERNATIONAL DEALER NEWS - AUGUST / SEPTEMBER 2023 41