ZIPP 303 XPLR S B1 - 00.1918.805.000 / 00.1918.805.002

ZIPP 303 XPLR S B1 Wheel - 00.1918.805.000 / 00.1918.805.002 - 2026

The ZIPP 303 XPLR S B1 rear wheel - dark grey is developed for gravel cyclists who want a fast, robust, and high-performance carbon wheel for long distances. Designed for wide gravel tires and modern tubeless setups, it combines efficiency, traction, comfort, and aerodynamic performance.

Its 54mm deep and 32mm internal width hookless carbon rim allows for full use of approved 40-61mm tubeless-ready gravel tires. By increasing the available air volume, it allows for lower tire pressures to reduce vibrations, improve traction, and maintain grip on uneven terrain.

At the rear, the Zipp 303 XPLR S B1 emphasizes efficient power transfer, climbing traction, and stability on long, fast sections. It features the Zipp 176D hub, available with either SRAM XDR or SRAM / Shimano Road freehub body, depending on the version.

Rim design

Construction

Hookless carbon rim.

Format

700c.

Rim depth

54 mm.

Internal width

32 mm.

Maximum external width

40 mm.

Rim profile

Symmetrical.

Finishing

UD fiber with adhesive decorations.

Gravel technology

Total System Efficiency

The Zipp 303 XPLR S B1 applies the Total System Efficiency philosophy to the demands of gravel riding, working on reducing rolling resistance, vibration, aerodynamic losses and weight.

Ultra-wide profile

The 32mm internal width increases the tire's air volume, allowing for reduced inflation pressure to better filter out terrain irregularities.

Traction and efficiency

The ability to run at lower pressure allows for better traction uphill and more grip in corners, without losing efficiency on fast sections.

Gravel aerodynamics

The wide and deep rim profile creates a smooth transition with compatible gravel tires, in order to improve aerodynamic efficiency on track and rough road.

Rear hub

Model

Zipp 176D.

Bearings

Stainless steel cartridge bearings.

Disc mount

Disc Center Lock.

Axis

Supplied with rear end caps for 12mm thru axle.

Freewheel bodies available

• SRAM XDR
• SRAM / Shimano Road

Tire compatibility

Compatible tires

Compatible only with approved Tubeless Ready tires from 40 to 61 mm, with sealant or inner tube.

Mandatory compatibility

The Zipp 303 XPLR S B1 must only be used with approved tires. The Goodyear XPLR Slick and Goodyear XPLR Inter are specifically designed and optimized for this wheel.

Maximum pressure

50 psi / 3.45 bar.

Braking

Brake type

Disc brake.

Disk interface

Center Lock.

Recommended use

• Gravel performance
• Gravel race
• Long distances on fast tracks
• Gravel climbs requiring traction
• Deteriorated roads
• Low-pressure tubeless setups with approved tires

Technical specifications

• Brand: Zipp
• Model: 303 XPLR S B1
• Model ID: WH-303-XPS-B1
• Wheel: rear
• Size: 700c
• Rim construction: Hookless carbon
• Technology: Tubeless
• Tire compatibility: Approved TLR tires from 40 to 61 mm
• Rim depth: 54 mm
• Internal width: 32 mm
• Maximum external width: 40 mm
• Hub: Zipp 176D
• Freehub body: SRAM XDR or SRAM / Shimano Road
• Bearings: stainless steel cartridge
• Braking: Center Lock disc
• Maximum pressure: 50 psi / 3.45 bar
• Maximum recommended system weight: 135 kg
• Sticker color: dark grey

Guarantee

Zipp Lifetime Warranty

Zipp wheels come with a lifetime warranty against product defects that occur during use. The warranty is non-transferable and proof of purchase is required.

Why choose the Zipp 303 XPLR S B1 rear wheel?

• Ultra-wide 32mm internal gravel carbon rim
• 54mm profile optimized for speed on gravel
• Compatible with approved tires from 40 to 61 mm
• Excellent traction thanks to low-pressure rolling
• Reliable Zipp 176D rear hub with stainless steel bearings
• Available with SRAM XDR or SRAM / Shimano Road freehub
• Center Lock disc mount
• Zipp Lifetime Warranty