<span>*NOTE - NEW Black Crank Arms DO NOT Have the Logo on the Drive Arm*</span><br /><br />Bike Polo ALL IN ONE guard and chainring. Made in the USA!<p>Paired with stiff 165mm Andel crankset with modest MKE Polo logo on right crank arm.</p><p>No more bent chainrings!</p><li>Use with a 103mm bottom bracket (Crank bolts sold separately)</li><li>The 35 tooth ring - Making some of the smallest ring sizes possible adds to the strength of the system.</li><li>The gear ratios - a 35t chainring and the following cogs/freewheels gets you this assortment of gear inches<br />* 12t - 78.8"<br />* 13t - 72.7"<br />* 14t - 67.5"<br />* 15t - 63.0"<br />* 16t - 59.1"<br />* 17t - 55.6"<br />* 18t - 52.5"<br />* 19t - 49.7"<br />* 20t - 47.3"<br />* 21t - 45.0"<br />* 22t - 43.0"<p>We wanted to fit ratios that allowed a polo player to ride to a match with a small cog on one side of the wheel, and flip it to the polo gear on the other side of the wheel after they arrive at the match.</p><p>CNC'd out of 7075 T6 Aluminum - one of the most durable alloys available and the choice of material for many professional track racing chainrings. So you should get miles and miles and miles of use.</p><p>Chain Width - We used the Izumi 1/8" Super V chain as the baseline width for this guard. So do you have to use the Super V? Absolutely Not, feel free to use any 9.5mm width (pin width) 1/8" chain.</p><p>NOTE - It is no secret that chains and chainrings wear with each other. Chain stretch is the number one reason chainrings go bad. So if you want this all-in-one to last you as long as possible, change your chain every year (if not twice a year) before the chain stretch ruins the teeth. If you want to make things really easy on yourself buy a Park CC-3C Chain Wear Indicator and check your chain frequently.</p><p> </p></li>