![]() WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. There is something called a Coanda effect where a. ![]() Available now for your 2009-2014 Yamaha R1. Velocity stacks basically smooth out the air entering the head and are designed as efficient as possible. 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. Completely new velocity stacks for the 2015-2019 R1, set includes lower stacks / upper stacks & bolts. 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 ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |