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Bicycle Components & Parts

julio 26, 2026

Bike Lowrider Stem 21.1mm Bicycle Gooseneck Chrome

Lowrider Stem 21.1mm kp-2 ChromeQuill Diameter: 21.1mmBar Clamp: 25.4mmStem Length: 70mmQuill Length: 5-1/4 InchFork Compatibility: 1 InchAngle: 0 DegreesColor, Material: Chrome, SteelBrand: Lowrider
julio 26, 2026

Vintage Schwinn Bike Riser STEM Cruiser Bicycle 1″ Handlebars 13/16″ 21.1mm Fork

Silver Alloy Cruiser Bike Riser Quill Stem - 13/16" or 21.1mm post Schwinn 1966 - 1980 New Silver Alloy Riser Quill Stem for Vintage Schwinn and Other Vintage Bikes from 1966 to 1980. This Stem is for 1" center handle bars, that is handlebars with the 1" Bulge in the center. This Silver Stem has a 13/16" or 21.1mm post fitting a fork and top nut with that opening. The Sizes are in relation to the the size of the opening of your top nut and fork tube, the stem post diameter will have to slide in to opening snugly. On Vintage Schwinn's: the 7/8" also 22.2mm ( Bigger size ) was used from the early 1900's to 1965, The ( smaller size ) 13/16" also 21.1mm was used on Schwinn's from 1966 till the 1980's. The 13/16" or 21.1mm size stem was made smaller so the fork tube could be thicker and stronger. Always Measure to Be sure. Stem has approximately 95mm forward extension and 40mm of rise, There is a lip on stem and the stem will not insert over the lip and at that point there is approximately 80mm of rise, I say this because you cannot achieve a low profile look with this stem , but should you need rise its all good. The Lip may go all the way around or may only be partially on one side, seems to come both ways from the Factory. Stem weighs approximately 515 grams. Stem Comes in Black or Silver, your bidding on the color listed in the heading and shown in the photos. If You Like this Stem and need a different Sizes or Colors, Please Check out our ebay store for All our Cool Variations. This Part is Nice Addition to your Old School BMX Bike, Freestyle BMX Bike, Fixie Fascination, Ratty Mc Rat Rod, Antique Bike, Schwinn Krate Stingray Restoration, or Custom Chopper Bicycle Project. Happy Bidding! Be sure to Check out our other Auctions and Visit our ebay Store. Keep up to Date with our Freshly Listed Auctions and Product Sales by Subscribing to our ebay Newsletter. Buy Multiple Items and Save on Shipping, Same Item: Instant Automatic Discount. Separate Items: Buy all you want From LuxLowbikes, Then Wait till we invoice you with the Discounted rate before paying. Rate Varies in relation to how the item ships. All International orders must have International shipping activated for combined shipping. I Prefer to Ship Fed Ex Ground on Larger and USPS on Smaller Items. Shipping to Puerto Rico, Alaska, and Hawaii can be higher on large items. Pick up is Available in Golden Colorado on the Lux Low Ranch, Between Boulder and Denver, Colorado. Payment must be received with in 7 days of Auction end. If you have a problem with your order, We strongly suggest emailing us first for our best solution to the problem. We now offer FREE RETURNS filed within 30 days of Receipt. PLEASE NOTE: FREE RETURNS DOES NOT Mean Free of Responsibility. Free Returns means we will provide a return label or a Forward Working Solution should we make a mistake. Should you make a Mistake or a Hasty Purchase, without reading Our Extensive Item Descriptions, We Still Provide a Shipping Label but the Return Shipping Costs will be Your Responsibility and Come out of the Refund. Free Returns is a Stream Line ebay Return System for your convenience and the Party that makes the mistake takes care of shipping costs. Please make Responsible Purchases, Read the info, Help us Cut Down on Returns and Help Keep our Prices Low. Any Abuse of this System or Fraudulent Returns will be escalated to ebay. We Hope You Enjoy Bikes as Much as We Do, Check Out the new look of Lux Low our Ever Growing Bicycle Portfolio of Antique and Vintage Bicycles from 1890 to 1990. We Specialize in Full Antique Bicycle Restoration, Custom Chopper Bicycles, Antique Wood Wheel Safety Bicycles, Vintage Cruiser Patina Restores, and Vintage Road & Racing Bikes. We Excel in Patina Wood Wheel Restores: Miami, Racycle, Mead, Ranger, Dayton, Iver Johnson, Spalding, Pope, Columbia, Sterling, and Repainting Schwinn Krate, Stingray and Ballooner Bikes, Prewar Elgin, Colson, Shelby, Dayton Huffman, Cleveland Welding, Hawthorne, Roadmaster, and Dope Azz Custom Bikes.
julio 26, 2026

Alloy 13/16″ 21.1mm OS BMX Bike 4Bolt Quill Stem Vintage Schwinn Cruiser Bicycle

13/16" or 21.1mm Old School BMX Bike 4 Bolt Quill Stem ( Your Color Choice ) New Alloy & Steel 4 Bolt Bicycle Old School BMX Quill stem. Tough Durable Stem with 4 Bolt Clamp Pattern giving you superior strength from handle bar slipping and must for large handle bars. This Stem is for 7/8" center handle bars, Handlebars WITH OUT the large 1" center. This is a Nice Reproduction of a Classic Old School BMX Suntour Stem, but Does Not say Suntour. This Stem has a 13/16" or 21.1mm post fitting a fork and top nut with that opening. The Sizes are in relation to the the size of the opening of your top nut and fork tube, the stem post diameter will have to slide in to opening snugly. The 13/16" or 21.1mm size was common to most Old School BMX as the Stem got smaller so the fork tube could be thicker and stronger. This ( smaller size ) 13/16" also 21.1mm was used on Schwinns from 1966 till the 1980's. Please Note: there is another 7/8" also 22.2mm ( Bigger size ) used on Vintage Schwinn Bikes from 1900's to 1965 and is Common on Most all New Bikes, Click here to get to that auction. " Always Measure to Be Sure " Your Old Stem may have size markings. Your Color Choice and there is a Discount for buying Multiples. We also Sell a Replacement Bolt and 21.1mm Wedge Nut, The Wedge & Bolt is approximately 180mm long with 50mm of threading, it is longer than the one on the 4 bolt stem because it universal to fit more stems than just the 4 bolt. If You Like this Stem and need a different Sizes, Color, or Style, Please Check out our ebay store for All our Cool Variations. This part is a Nice Addition to your Custom Old School BMX Bike, Prewar Klunker, Antique Cruiser Bike, Ratty Rod Cruiser, Vintage Schwinn Restoration, or Custom Schwinn Chopper Bicycle Project. Please Choose Your Color Selection from Menu. Add Multiple items to your cart and check out using the Cart for Product and Shipping Discounts Happy Bidding! Be sure to Check out our other Auctions and Visit our ebay Store. Keep up to Date with our Freshly Listed Auctions and Product Sales by Subscribing to our ebay Newsletter. Buy Multiple Items and Save on Shipping, Same Item: Instant Automatic Discount. Separate Items: Buy all you want From LuxLowbikes, Then Wait till we invoice you with the Discounted rate before paying. Rate Varies in relation to how the item ships. All International orders must have International shipping activated for combined shipping. I Prefer to Ship Fed Ex Ground on Larger and USPS on Smaller Items. Shipping to Puerto Rico, Alaska, and Hawaii can be higher on large items. Pick up is Available in Golden Colorado on the Lux Low Ranch, Between Boulder and Denver, Colorado. Payment must be received with in 7 days of Auction end. If you have a problem with your order, We strongly suggest emailing us first for our best solution to the problem. We now offer FREE RETURNS filed within 30 days of Receipt. PLEASE NOTE: FREE RETURNS DOES NOT Mean Free of Responsibility. Free Returns means we will provide a return label or a Forward Working Solution should we make a mistake. Should you make a Mistake or a Hasty Purchase, without reading Our Extensive Item Descriptions, We Still Provide a Shipping Label but the Return Shipping Costs will be Your Responsibility and Come out of the Refund. Free Returns is a Stream Line ebay Return System for your convenience and the Party that makes the mistake takes care of shipping costs. Please make Responsible Purchases, Read the info, Help us Cut Down on Returns and Help Keep our Prices Low. Any Abuse of this System or Fraudulent Returns will be escalated to ebay. We Hope You Enjoy Bikes as Much as We Do, Check Out the new look of Lux Low our Ever Growing Bicycle Portfolio of Antique and Vintage Bicycles from 1890 to 1990. We Specialize in Full Antique Bicycle Restoration, Custom Chopper Bicycles, Antique Wood Wheel Safety Bicycles, Vintage Cruiser Patina Restores, and Vintage Road & Racing Bikes. We Excel in Patina Wood Wheel Restores: Miami, Racycle, Mead, Ranger, Dayton, Iver Johnson, Spalding, Pope, Columbia, Sterling, and Repainting Schwinn Krates, Stingrays and Ballooner Bikes, Prewar Elgins, Colsons, Shelbys, Dayton Huffmans, Cleveland Welding, Hawthorne, Roadmasters, and Dope Azz Custom Bikes.