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Parts & Accessories

Robert Axle Project Rear Lightning Bolt-On Thru Axle for Focus R.A.T. Bikes
$58.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - Be free—No longer are you constrained by the proprietary Focus R.A.T. axle. Simply replace the R.A.T. nut with our threaded nut and thru axle. A complete solution for a standard threaded axle for your R.A.T.-equipped bike. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding.
Robert Axle Project Kid Trailer Thru Axle
$58.00 - $65.00
Purchase our Kid Trailer axle for your bike, and share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure. Robert Axles for Kid Trailers are designed specifically to fit your 12mm thru-axle bike and allow attachment of any hitch-mounted trailer. These fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet, and cargo trailers such as Thule, Chariot, Burley, Instep, Carry Freedom, and many more. - The axle shaft and axle end are precision CNC-machined. - The axle shaft is 7075 aluminum and hard black-anodized for rugged durability. - The stainless steel axle end allows for mounting of the hitch provided with your trailer. - Hardware for attachment of the hitch is included; the hitch, itself, is not. - No special tools required. Design allows for wheel installation and removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Trainer Thru Axle
$54.00
Our Trainer Axle is designed to adapt your thru-axle equipped bike to on-wheel trainers, such as a 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo, and many others. Our goal is to fit the thru-axle to your bike perfectly to minimize spacers and extra parts, providing a clean, high-performance axle for your bike. Train, warm up, and be race ready and fit for the season. - When it’s time for your race or time to head outside, simply remove your bike from the trainer, remove the drive side axle end and go. Our axle is suitable for use on or off the trainer, indoors or out. - The axle shaft and axle ends are precision CNC-machined from 7075 aluminum and hard-anodized for rugged durability. - No special tools required. Design allows for installation or wheel removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world. Important: Before you order, make sure your specific trainer will accommodate the width of your modern thru-axle-equipped bike. Measure your trainer at the widest setting and measure the outside width of your bike frame. Our the trainer axle ends will extend past your frame on each side.
Robert Axle Project BOB Trailer Thru Axle
$62.00 - $69.00
Yes! A 12mm thru-axle adapter for BOB Trailers. These Robert Axles for BOB Trailers are specifically engineered to attach the proven BOB Trailer to your thru-axle-equipped bike. Take full advantage of your modern bike with 12mm thru-axles and harness the rigidity of the thru-axle to haul your BOB Trailer. Set out on any adventure, big or small. Great for off-road tours, trail building, hauling cargo, and more! - The axle shaft and axle end are precision CNC-machined. - The axle shaft is 7075 aluminum and hard black-anodized for rugged durability. - The axle ends are stainless steel which allows for mounting of the BOB Trailer bobbins. - No special tools required. The design allows for wheel installation or removal using your standard 5mm hex wrench. - Please note: This axle does not come with the BOB Trailer bobbins (those are available separately). Or, you can reuse your bobbins from the stock BOB Trailer Quick Release that came with your trailer. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Rear Lightning Bolt-On Thru Axle
$48.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding.
Robert Axle Project Front Lightning Bolt-On Thru Axle
$42.00 - $48.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles or create wind drag. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding. - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Trainer Thru Axle for Cervelo R.A.T. Bikes
$80.00
Our Trainer Axle is designed to adapt your thru-axle equipped bike to on-wheel trainers, such as a 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo, and many others. Our goal is to fit the thru-axle to your bike perfectly to minimize spacers and extra parts, providing a clean, high-performance axle for your bike. Train, warm up, and be race ready and fit for the season. This axle will replace the R.A.T. axle found on all Cervelo R.A.T. equipped bikes. In addition to this axle, we include our replacement derailleur hanger with traditional threads. This axle combined with the replacement derailleur hanger will provide a complete threaded thru-axle system. Our derailleur hanger matches the geometry and construction of the stock derailleur hanger in every way for crisp shifting performance. - The axle shaft and axle ends are precision CNC-machined from 7075 aluminum, and hard-anodized for rugged durability. - No special tools required. Design allows for wheel installation or removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Drive Thru Dummy Hub Value Meal
$70.00
The Drive Thru is a dummy hub or chain keeper that replaces your wheel while cleaning the chain. It is a fast and effective way to clean your chain between races or in your garage. It allows you to fully rotate your cranks and shift through your complete range of gears while protecting the frame. Installs simply with one hand, and is quick and easy to change between bikes. The Drive Thru is also great for packing the bike for transport. *This Drive Thru Value Meal includes three dummy axles with 1.0, 1.5 and 1.75 thread pitches and one pulley. - Value Meal includes 1.0, 1.5, and 1.75mm thread pitch dummy axles. - All Drive Thru dummy axles are 12mm in diameter. - Dummy axles are precision machined from 7075 aluminum and knurled for easy grip. - Pulleys are machined from durable Delrin. - Oil and solvent resistant O-rings - Lead-in threads designed for quick insertion into the frame - Simple, one-handed installation (no tools required)
Robert Axle Project RAP Bobbins
$18.50
These bobbins are made by the Robert Axle Project and are identical to the bobbins that came with your original BOB skewer. Slide them on your axle ends to complete your Robert Axle thru axle for BOB Trailer. - Sold in pairs - Manufactured from 303 Stainless Steel - Includes stainless steel hardware for attaching to axle
Robert Axle Project Trainer Thru Axle for Surly MDS/Gnot-Boost
$54.00
Our Trainer Axle is designed to adapt your Surly MDS/Gnot Boost thru-axle-equipped bike to on-wheel trainers, such as a 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo, and many others. Our goal is to fit the thru-axle to your bike perfectly to minimize spacers and extra parts, providing a clean, high-performance axle for your bike. Train, warm up, and be race ready and fit for the season. - This axle is for Surly bikes with the MDS/Gnot Boost system. - When it’s time for your race or time to head outside, simply remove your bike from the trainer, remove the drive side axle end and go. Our axle is suitable for use on or off the trainer, indoors or out. - The axle shaft and axle ends are precision CNC-machined from 7075 aluminum, and hard-anodized for rugged durability. - No special tools required. Design allows for wheel installation or removal using your standard 5 mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Rear Lightning Bolt-On Thru Axle for Cervelo R.A.T. Bikes
$78.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. This axle replaces the R.A.T. axle found on all Cervelo R.A.T.-equipped bikes. In addition to this axle, we include our replacement derailleur hanger with traditional threads. This axle, combined with the replacement derailleur hanger, will provide a complete, threaded thru-axle system. Our derailleur hanger matches the geometry and construction of the stock derailleur hanger in every way for crisp shifting performance. - This axle is designed specifically to replace a rear R.A.T. axle on a Cervelo bike with included derailleur hanger. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. Our axle weighs 36 grams. Our axle and hanger weigh a combined 54 grams. Front and rear, our axle system saves a combined 58 grams relative to stock parts. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding.
Robert Axle Project Front Lightning Bolt-On Thru Axle for Focus R.A.T. Bikes
$52.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer the highest quality, simple, lightweight alternative to that bulky handle. - This axle is compatible with bikes that have a Focus R.A.T. thru-axle in the fork with 100 x 12mm front hubs. - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Rear Lightning Bolt-On NAILD Thru Axle
$58.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - This axle is compatible with bikes that use a NAILD thru-axle in the frame with 142 x 12mm spacing - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Thunder Bolt-On Thru Axle
$52.00
Designed for big rides and big riders. Our Thunder Bolt-On replacement thru-axles are a strong and durable option to replace your stock through axle. Thunder Bolt-On Axles are NOT for use with a trailer but are a solid option if you’re looking to replace your stock thru-axle with a more durable, lower-profile design.  - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Kid Trailer Thru Axle for Focus R.A.T. Bikes
$68.00
Robert Axles for Kid Trailers are designed specifically to fit your 12mm thru-axle bike and allow attachment of any hitch-mounted trailer. These fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet, and cargo trailers such as Thule, Chariot, Burley, Instep, Carry Freedom, and many more. Purchase our Kid Trailer axle for your bike, and share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure. - This Kid Trailer axle is specific to bikes that have the Focus R.A.T. thru-axle system with Boost 148 x 12mm hub spacing. - This axle is compatible with Burley, Carry Freedom, Chariot/Thule, Croozer, Instep, and many more hitch-style trailers. - The axle shaft and axle end are precision CNC-machined. - The axle shaft is 7075 aluminum and hard black-anodized for rugged durability. - The stainless steel axle end allows for mounting of the hitch provided with your trailer. The threads are M10x1 (metric). - Hardware for attachment of the hitch is included; the hitch, itself, is not. - No special tools required. Design allows for wheel installation and removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Kid Trailer Thru Axle for Surly MDS/Gnot-Boost
$58.00 - $65.00
Purchase our Kid Trailer axle for your bike. and share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure. Robert Axles for Kid Trailers are designed specifically to fit your 12mm thru-axle bike and allow attachment of any hitch-mounted trailer. These fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet, and cargo trailers such as Thule, Chariot, Burley, Instep, Carry Freedom, and many more. - This axle is specifically designed to fit the 142/148 hub standard Surly MDS or Gnot Boost bikes. - The derailleur end of our axle is internally threaded and will use the bolt from your stock Surly axle. The disc brake side of our axle has an engineered mount for your trailer hitch. That mount has been permanently attached to the axle. - The axle shaft and axle end are precision CNC-machined. - The axle shaft is 7075 aluminum and hard black-anodized for rugged durability. - The stainless steel axle end allows for mounting of the hitch provided with your trailer. The threads are M10x1 (metric). - Hardware for attachment of the hitch is included; the hitch, itself, is not. - No special tools required. Design allows for wheel installation and removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Front Lightning Bolt-On NAILD Thru Axle
$52.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Trainer Thru Axle for Focus R.A.T. Bikes
$64.00
Our Trainer Axle is designed to adapt your thru-axle equipped bike to on-wheel trainers, such as a 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo, and many others. Our goal is to fit the thru-axle to your bike perfectly to minimize spacers and extra parts, providing a clean, high-performance axle for your bike. Train, warm up, and be race ready and fit for the season. - This axle is specific to bikes with Focus R.A.T. thru-axles and 12 x 142. Includes a replacement R.A.T. nut. - When it’s time for your race or time to head outside, simply remove your bike from the trainer, remove the drive side axle end, and go. Our axle is suitable for use on or off the trainer, indoors or out. - The axle shaft and axle ends are precision CNC-machined from 7075 aluminum, and hard-anodized for rugged durability. - No special tools required. Design allows for wheel installation or removal using your standard 5 mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
Robert Axle Project Kid Trailer Thru Axle for Cervelo R.A.T. Bikes
$82.00
Robert Axles for Kid Trailers are designed specifically to fit your 12mm thru-axle bike and allow attachment of any hitch-mounted trailer. These fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet, and cargo trailers such as Thule, Chariot, Burley, Instep, Carry Freedom, and many more. Purchase our Kid Trailer axle for your bike, and share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure.
Robert Axle Project Front Lightning Bolt-On Thru Axle for Cervelo R.A.T. Bikes
$52.00
After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - This axle is compatible with bikes that have a Cervelo R.A.T. thru-axle in the fork with 100 x 12mm front hubs. - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.
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