About The SRAM RED XPLR AXS E1 13-Speed 46t Max UDH Black/Silver Rear Derailleur
The SRAM RED XPLR AXS E1 is a 13-speed wireless gravel rear derailleur that mounts to UDH frames with SRAM's Full Mount, hangerless interface. It is 1x-specific for the 10-46t XPLR 13-speed cassette and SRAM road Flattop chains.
Setup has no adjustment screws. A carbon cage, ceramic pulley bearings and an MTB-style spring clutch handle rough gravel, and the Magic Wheel lower pulley keeps turning if debris gets into it. The battery is not included.
Who It's For
- Gravel riders building a RED XPLR 13-speed drivetrain on a UDH frame.
- Riders who want gravel gearing with the impact resistance of Full Mount.
- Consider a different derailleur if your frame does not have UDH, or you run 12-speed.
What to Look For
- Frame: Requires a UDH interface.
- Drivetrain: 13-speed only: 10-46t XPLR cassette and SRAM road Flattop chain, 1x.
- Battery: Not included; compatible with existing AXS batteries.
Key Features
Full Mount, hangerless. Mounts to the UDH for precise shifting and resistance to impacts.
Magic Wheel. The debris-resistant lower pulley keeps the chain moving if a stick or stone gets lodged.
Spring clutch. MTB-derived chain control for rough gravel.
Carbon cage, ceramic bearings, rebuildable. Light materials, and parts are replaceable. Chain wrap capacity is 36t.
Rider Intent Summary
- Biggest strengths: 13-speed gravel range with Full Mount strength and no screws to set.
- Tradeoffs: UDH frame, 13-speed cassette and battery required.
- What makes it different: SRAM's first hangerless gravel derailleur, built for a 10-46t 13-speed cassette.
Victory's Take
We see RED XPLR E1 as the strongest gravel drivetrain SRAM has offered. Victory Bicycle Studio can confirm your frame's UDH and set the system up.
Specifications
- Brand: SRAM
- Model: RED XPLR AXS (E1)
- Drivetrain speeds: 13
- Largest cog: 46t
- Chain wrap capacity: 36t
- Mount: Full Mount, hangerless (UDH frame required)
- Shifter compatibility: SRAM eTap AXS
- Cassette: 10-46t XPLR 13-speed
- Chain: SRAM road Flattop
- Cage: Carbon
- Pulley bearings: Ceramic
- Battery: Not included
- Color: Black/Silver
- Part number: 00.7518.185.000
What you get

SRAM RED XPLR AXS E1 13-Speed 46t Max UDH Black/Silver Rear Derailleur
Frequently Asked Questions
Do you offer free shipping?
We do offer free shipping on non-bike orders over $100. We do not offer free shipping for bicycles unless it is a one time promotion. Generally, bike shipping will cost $150 and that covers just the shipping of the bike with no assembly. If you were to bring that bike to your local mechanic or bike store, you would pay them their assembly fee. If you choose our Professional Assembly option for $200, our service technicians would assemble the bike before shipping and then re-pack the bike safely for transit. When you receive the bike you would attach the front wheel, attach the seatpost/saddle, and raise the handlebars and clamp them. Those three items do have to be detached to minimize or eliminate the chance of damage in transit.
How much does shipping cost?
For orders of parts, accessories, apparel, etc. on orders under $100, shipping is a flat rate of $9.99. Regular bike shipping without assembly is $150, bike shipping with Professional Assembly is an additional $200 (so $350 in total which includes the $150 of regular shipping). Our White Glove Delivery option is $699 and that will cover the assembly of the bike and our White Glove Delivery partner delivering your dream bike to your front door, ready to ride!
How can I track my order?
When you place your online order, you will receive an instantaneous email update with your order number and order details, and shortly after, you will receive a follow up order email with the tracking number for your order. If you still need assistance with your order, feel free to email us at online@victorybicyclestudio.com and we will respond asap.