BH Ultralight 2026 User Manual

02 BH WARRANTY

BH BIKES is committed to producing high-quality, durable bicycles. In addition to statutory warranties, BH BIKES offers an additional 'LifeTime Frame' warranty. This section details both warranty types and the registration process for the Lifetime Frame warranty.

Statutory Warranty

The statutory warranty covers the original purchaser against manufacturing defects and non-conformities for frames and components manufactured by BH BIKES. The warranty period is determined by the current laws of the country of purchase and begins on the purchase date. During this period, manufacturing defects will be repaired or replaced free of charge, including transport expenses and any resulting losses, provided certain conditions are met:

• This warranty does not affect the consumer's statutory rights in each country.
• Faulty items are covered upon decision by BH Technical Service.
• The warranty excludes parts prone to wear from normal use.
• Defects or breakages due to improper use, competitions, non-original accessories, or incorrect maintenance are not covered.
• The warranty is void if pre-delivery and scheduled inspections, as per this manual, have not been carried out, observed, documented, and stamped by an authorized BH dealer.
• If a repair is unsatisfactory, the holder may request replacement or a refund.
• The warranty period is interrupted during repairs and renewed upon replacement of components.
• Warranty claims expire six months after the warranty validity period ends.
• All warranty claims must be processed through an authorized dealer.
• For geographical scope, refer to the User Manual or www.bhbikes.com.

Read the full terms and conditions at: https://www.bhbikes.com/es_INT/registro-garantia-vida-bh/registra-tu-bici-garantia-de-por-vida

Lifetime Frame Warranty

BH Bikes offers a commercial policy through authorized stores, providing coverage for manufacturing defects in frames beyond the statutory warranty period. Key points include:

1. The LIFETIME warranty applies only to BH frames and bikes purchased through BHBIKES EUROPE S.L. authorized stores.
• The buyer must register the LIFETIME warranty online within 30 days of purchase, as indicated on the invoice.
• This warranty is non-transferable and is void upon sale to a third party. The original buyer is the individual who registers the warranty at the time of purchase.
• The bicycle must be serviced by an establishment authorized by BHBIKES EUROPE, following the user manual instructions.
2. The LIFETIME warranty does not cover:
• Rear swingarms on dual suspension models, forks, kids' bikes, original paint defects/fading, or rust from natural deterioration.
• Defects or breakages from accidents, improper, or negligent use.
• Installation of non-intended or incompatible components/accessories.
• Defects from improper handling.
• Scratches, discoloration, or stains from abrasive fluids, sharp items, clamps, or prolonged exposure to sunlight/weather.
• Normal wear and tear, including material fatigue. Regular inspection by the user is crucial.
• Improper use and/or maintenance.
• Frames used in competitions, demos, or rentals.

Read the full terms and conditions at: https://www.bhbikes.com/es_INT/registro-garantia-vida-bh/registra-tu-bici-garantia-de-por-vida

Registering the Lifetime Frame Warranty

To activate the LIFETIME FRAME extended warranty, register your bicycle within 30 days of purchase:

• Visit the BH BIKES website to register: https://www.bhbikes.com/es_INT/registro-garantia-vida-bh/registra-tu-bici-garantia-de-por-vida
• Watch the instructional video: https://youtu.be/47aLVgUI248

The serial number, required for registration, is located on the bottom of the bicycle, on the seat tube, above the bottom bracket.

Submitting a Warranty Claim

All warranty claims must be processed through an official BH dealer. The dealer will assess the claim and submit it to BH. BH will then communicate the required corrective measures to the dealer for customer notification. If the original dealer is unavailable, contact BH directly for assistance in finding an authorized dealer: https://www.bhbikes.com/es_INT/quienes-somos/contacto

03 MAINTENANCE

This section provides crucial information for the maintenance of your BH Ultralight bicycle (LR906 / LR806 / LR706 / LR606). Refer to the BH Bikes website for comprehensive manuals and third-party component information.

Inspect the Bicycle Before Use

Before each ride, perform the following checks to ensure the bicycle is in optimal working condition:

• FRAME: Check for cracks, damage, or unusual noises.
• CHAIN: Ensure it is lubricated and the transmission operates quietly.
• BRAKES: Verify proper function. Squeeze brake levers firmly; they should not touch the handlebars.
• TYRES: Check correct pressure and inspect for cuts on the tread or sidewalls. Ensure the wear level is within limits.
• WHEELS: Ensure wheels rotate freely. Check brake lining-to-rim clearance and frame-to-tyre clearance.
• STEERING: Confirm smooth, noise-free steering operation.
• SWINGARM ROTATION POINTS: Verify suspension functions correctly and without noise under load. Any play may indicate incorrect torque or worn bearings.
• BEARINGS: Ensure bearings operate smoothly and quietly. Replace worn bearings to prevent damage to associated components.
• ELECTRICAL SYSTEM (if applicable): Check that the electrical assistance mode is active and all components (motor, display, sensors) function correctly. Ensure connections are secure and undamaged.

Important: Do not ride the bicycle if any of these checks fail. A faulty bicycle can cause serious accidents. Consult your nearest BH workshop if unsure.

Failure to adhere to recommended tightening torques can lead to accidents and death. Dynamic loads subject bicycle parts to stress, leading to fatigue and wear. Regularly inspect for signs of wear, scratches, bends, or cracks. Parts may fail suddenly after their service life; regular servicing by an authorized BH workshop is recommended.

Keep the Bicycle Clean

Follow these basic cleaning measures for optimal performance and to prevent premature wear:

• Clean dust and mud with a damp sponge and a mild, neutral cleaning product.
• Plastic parts should only be washed with soapy water.
• Tyres can be cleaned with a sponge or brush and soapy water.
• After cleaning, dry the bicycle thoroughly with a soft cloth.
• Lubricate transmission elements after each cleaning.

Caution: Dirt can cause damage and lead to accidents. Never use pressure washers or steam cleaners.

Keep the Transmission Lubricated at All Times

Washing the bicycle can remove chain lubrication. Inspect and lubricate chain links as needed. Excessive lubrication can attract dirt, causing premature wear and operational issues. Never use pressure washers or steam cleaners.

Part Maintenance Calendar

Regular maintenance and inspections are essential. The frequency depends on usage type (leisure, road, mountain) and conditions.

Spare Parts

Use original parts for optimal performance and safety. Non-original parts may cause damage not covered by warranty. Common wear parts include tyres, inner tubes, brake pads, disc brakes, rims (if part of the brake unit), headlights, position lights, batteries, and accumulators.

• TYRES: Replace with equivalent types, checking the ETRTO standard. Using tyres with a larger outer diameter than recommended can cause interference with the frame or fork, leading to loss of control and accidents.
• INNER TUBES: Replace with suitable types according to the tyre, referencing the ETRTO standard on the inner tube.
• DISC BRAKES AND BRAKE PADS: Follow manufacturer instructions.
• HEADLIGHTS AND POSITION LIGHTS: Replace bulbs with the same type.
• CHAIN, COG, AND CHAIN RINGS: Follow manufacturer instructions.
• BATTERIES AND ACCUMULATORS: Replace with the same type.

Failure to use original parts may result in damage not covered by the warranty.

After a Fall, Blow or Impact

If you experience a fall, blow, or impact:

1. Ensure you are fit to continue cycling. Seek medical assistance if injured.
2. If fit to continue, thoroughly inspect the bicycle for proper working order:
• Wheels: Check secure fastening and centering. Ensure brakes allow free wheel rotation.
• Handlebars/Frame: Inspect for twists or breaks. Check the front is firmly seated on the fork.
• Chain: Verify correct fitment and transmission operation, especially after a fall on the drive side. Check gear-to-spoke clearance.
• Other Components: Inspect saddle, upper tube, and bottom bracket box for defects.
• General Check: Lift and drop the bicycle slightly to listen for loose bolts. Inspect the entire bicycle for bends, worn finishes, or cracks.
3. If no issues are detected, ride cautiously, avoiding sudden braking or acceleration. If unsure, do not ride. Inspect the bicycle again at home and consult a BH workshop if concerns persist.

Note: Bent aluminum parts must not be straightened as they pose a high risk of breakage. Replace them for safety.

04 WARNINGS ON USE

• MAXIMUM TYRE SIZE: Ensure at least 6 mm clearance between the tyre and frame/fork parts when installing different-sized tyres.
• MINIMUM AND MAXIMUM INSERTION LENGTH OF THE SEAT POST: Failure to adhere to these dimensions can cause a lever effect on the frame, leading to damage and accidents. Such damage is not covered by warranty.
• MAXIMUM FORK LENGTH (AXLE-TO-CROWN): Observe the specified maximum length to prevent frame damage and potential accidents.
• MAXIMUM NUMBER OF STEERING SPACERS: Do not exceed the specified number of steering spacers fitted under the stem to prevent material damage and accidents.
• POSITION OF THE SPINDLE INSIDE THE FORK TUBE: No steering spacers should be fitted above the stem to avoid material damage and accidents.
• INTENDED USE: This bicycle is designed for operation on asphalt roads, with wheels always in contact with the running surface.

05 SIZES AND DIMENSIONS

The following table provides key dimensions for all BH Ultralight models across different sizes:

06 TECHNICAL SPECIFICATIONS

Detailed technical specifications for the BH Ultralight bicycle:

07 ASSEMBLY AND SPARE PARTS

Dimensions of the Steering Tube

Diagram shows a steering tube with dimensions. Upper and lower sections are 1.5" Steerer with a 45° contact angle. Bearing dimensions are 52x40x7.

Headset Assembly

Diagram illustrates the assembly of headset components: Compressor (0.1), Bearings (0.2), Washer (0.3 - do not assemble), and Expander (0.4). Parts are listed with references. Caution: Carbon forks must not be mounted with a spindle, as it can cause breakage. Always use an expander with carbon forks.

• 01 ACR STEERING COVER: Ref. 383240800 (1x Steering cover 10 mm)
• 02 ACR SPACER: Ref. 383240900 (2x Spacer 10 mm)
• 03 ACR SPACER: Ref. 383241000 (1x Spacer 5 mm)
• 00 HEADSET: Ref. 383240700 (1x Compressor, 2x Bearing, 1x Washer, 1x Expander)

EVO SL Monocoque

Diagram and parts list for the EVO SL Monocoque assembly (LR806 / LR706 / LR606 models):

• 04 EVO SL MONOCOQUE: 1x Bolt (4.1), 1x Washer (4.2), 1x Stem cover (4.3), 1x EVO SL monocoque (4.4), 2x Bolt (4.5) with 6Nm torque specification.

Cabling of the Elements of the Monocoque

Diagram shows internal cable routing for Rear Brake, Front Derailleur, and Rear Derailleur through the monocoque frame.

Front Axle Mounting

Diagram shows front axle mounting. Caution: Tightening the axle without the wheel in place may cause the carbon to break behind the housing. Avoid tightening the axle for bicycle transport.

Hanger

Diagram shows the derailleur hanger attachment. Parts include Hanger (5.1) and Bolt M4xP0.7x10.5mm (5.2).

Mounting the Built-in Lock on the Saddle's Seat Post

Diagram shows the installation of a built-in clamp and shim on the seat post. Parts include Shim (6.1) and Bolt M6xP1.0x25mm (6.2) with 5-6Nm torque.

Derailleur Bracket

Diagram shows the derailleur bracket mounting. Part: Derailleur bracket (7.1).

Rear Light

Diagram shows the rear light assembly. Parts include Rear light (8.1), Bolt (8.2), Magnetic coupling (8.3), and Frame coupling (8.4 - not for Ultralight models).

Toolbox

Diagram shows the integrated toolbox. Part: Toolbox (9.1).

Bottle Holder

Diagram shows bottle holder mounting points. Parts include Screws M5xP0.8x18mm (10.1), Bottle (10.2), and Bottle holder (10.3).

Mounting the Shimano Di2 in Bottom Bracket Shell

Step-by-step guide for mounting the Di2 battery in the bottom bracket shell (LR806 / LR706 / LR606 models):

1. Insert Di2 through the steerer tube into the diagonal tube.
2. Pull the end of the battery out of the bottom bracket shell hole.
3. Attach the plastic parts to the battery.
4. Insert the plastic parts into the hole until the assembly is fixed.

Parts: 11 DI2 BOTTOM BRACKET HOLDER (1x Right holder, 1x Left holder), 12 Di2 SHIMANO (1x Di2 Shimano).

Mounting of the Shimano Di2 on the Seat Post

Diagrams show the installation of Di2 components on the seat post. Parts: 13 DI2 SEATPOST MOUNT (1x Di2 27.2mm seatpost holder), 12 Di2 SHIMANO (1x Di2 Shimano).

Cabling of the Mechanical Parts

Diagrams illustrate the internal routing of mechanical cables for Front Brake, Rear Brake, Front Derailleur, and Rear Derailleur.

08 DECLARATION OF CONFORMITY

BH BIKES EUROPE, SL declares that the listed bicycle models, including the ULTRALIGHT series, manufactured in 2025 and 2026, comply with relevant requirements (RD 339/2014) and harmonized standards (ISO 4210 series, ISO 8098, EN 16054). Production control follows ISO 9001.

09 HELP AND ADDITIONAL RESOURCES

BH BIKES offers various channels for support and community engagement:

• Technical Resources: Find user manuals, apps, warranties, and videos on the BH Bikes website: https://www.bhbikes.com/manuals. Access step-by-step tutorials on the specialized YouTube channel: https://www.youtube.com/user/ServicioTecnicoBH.
• Contact Us: For assistance, contact your nearest authorized dealer via the store locator: https://www.bhbikes.com/es_INT/tiendas/buscador-de-tiendas. Direct contact: Tel: +34 945 13 52 02, Email: info@bhbikes.com, Address: P.I. Jundiz- Perretagana 10, 01015 Vitoria, Alava (Spain).
• Social Media: Join the global cyclist community and share your BH experiences.