Velocity stacks r19/7/2023 ![]() It is ignored 100% above 20% - 30% on most Japanese bikes and on some BMW models, up to almost 50+% throttle in the lower rpms. ![]() Why do you think that an O2 sensor works at full throttle? Paint fumes maybe? :-) I used to paint, too. Not to be disagreeable, but I just looked at and I didn't see anything that said anything about an O2 sensor anywhere. I'm just so glad i didn't buy the '07 R1 like i was tempted to do a few months back when the hype was out there. The GSXR lost as much as 15 Hp in some spots with no gains anywhere. The Gixxer 1k was not(no PC yet it's an 07) although it was touted by FactoryPro as a Drop-in gain due to the O2 Sensor. The R1 was Dyno tuned & the powerband lost with the stacks. I would think that with stacks you would lose top end and gain mid and lower, It seems to me that they are like the intake on a car the taller the intake the Higher up the power curve the shorter the stack or intake the lower the power curve Last year my cousin in Cali had Factory themselves install and tune his 06 gixxer 1000 and he said the bike was a lot better in the upper midrange, too. I rode the bike before and after and it did wheelies lots easier and had to be more careful on freeway onramps. I haven't looked at how the stockers are.comments?Īs long as y'all don't have any kryptonite/I'm gonna be alright.ĭon't know about the 07 gsxr1000, but the R1 stacks worked a lot better in my friend's bike - the upper midrange was pretty wicked. Supposedly, Bear has made some proto ZX-14 stacks but they're such a pain to install he might not make them. Hope you don't mind if I swing this thread to ZX-14-oriented. ![]() ![]() They're still hung up on carburetors.Ģ006 Kawasaki ZX-14 Ninja, Red now with mo' Brock's in my lyfeġ991 Yamaha Vmax - Because I need a mule to carry the manhoodĢ002 Ford Lightning - Ford GT Aluminum block engined, 802HP 911TQ now WhippleCharged IMO Factory Pro hasn't been relevant nor innovative since fuel injection became the standard on sportbikes. Oh, Hey guys it's been a while! Gonna try to show my face around here alittle more! Took the Factory Pro stacks out & both bikes were restored to full power.ĭoes anyone have actual dyno results that were positive from these stacks as a mod. I just dynoed 2 bikes, an 07 GSXR1000 & an 04 R1. Dynoed & Taken off the Bike!įactoryPro Velocity Stacks. WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer.FactoryPro Velocity Stacks. Available now for your 2009-2014 Yamaha R1. These stacks were specifically developed on the Graves Yamaha Superbike give our riders the drivability needed to win races. The shorter than stock lower stacks feed the R1’s appetite for big air when the upper stacks raise improving top end power. The staggered tops allow the cylinders to share the available volume of air in the R1’s air-box evenly at low and mid range RPMs. This stack kit improves power throughout the entire RPM range. The upper stacks must be used with a YEC ECU or Flash Tune and correct setting will be supplied to customer upon purchase.ĭeveloped by Graves for your Cross Plane Crank Yamaha R1. See below for full details and restrictions on these parts when used with stock pieces. This "Upper" or "Top" velocity stack is sold separately from the lower billet machined piece shown in picture ( Lower Part # ABY-09R1-REVB). ![]() Graves Motorsports Yamaha R1 Top Velocity Stacks for the 2009-2014 models. The items are sold separately as you can use our performance designed lowers with the stock uppers (uppers cannot be used with the stock lower stacks). NOTE: Both "Upper" and "Lower" R1 Velocity Stacks are designed to work together. 09-14 Yamaha YZF-R1: Graves Upper Velocity Stacks ![]()
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