Berria NAII BR GRX800 Di2 gravel bike – Vision Team 30 Nacked Carbon Kerochalk 2027

The Berria NAII BR GRX800 Di2 12V 2027 Naked Carbon Kerochalk is a top-of-the-range carbon gravel bike designed for cyclists looking for a bike that is fast, comfortable and capable of tackling a wide variety of terrain.

A true role model Fast Gravel, the NAII combines a framework Full Carbon HM3X, BGC geometry, the suspension system 28 mm SOFTEX and an electronic transmission Shimano GRX800 Di2 12-speed. This combination ensures the bike retains its sporty handling on the road whilst offering excellent adaptability when the tarmac gives way to tracks and gravel roads.

This version is fitted with the wheels Vision Team 30, a 30 mm semi-aero aluminium model designed for bikes with disc brakes and listed by Vision for road, gravel and cyclocross riding. They are built with a focus on reliability and versatility, featuring 24 spokes at both the front and rear and sealed cartridge bearings.

The colour Naked Carbon Kerochalk particularly highlights the frame’s carbon structure and gives the NAII a look that is at once technical, elegant and decidedly sporty.

An HM3X carbon gravel bike designed for performance

The framework of the Berria NAII uses a structure Full Carbon HM3X Triple Monocoque. . Berria combines various high-modulus carbon fibres, including Toray T700, T800 and T1100G, to achieve a balance between stiffness, weight, precision and handling.

This design is in line with the NAII’s ‘Fast Gravel’ philosophy: to offer a bike capable of riding fast on smooth sections whilst maintaining sufficient comfort and control when the terrain becomes more uneven.

The framework also includes:

• BGC geometry
• a T47 bottom bracket
• the fully integrated ICS2 cable system
• a UDH derailleur hanger
• through-holes
• compatible with tyres up to 700 x 50C

SOFTEX suspension: 28 mm of travel

The main feature of the Berria NAII is its system SOFTEX.

The frame features 28 mm of travel, which helps to filter out some of the vibrations and shocks caused by uneven surfaces.

This technology offers a particularly appealing advantage on long gravel rides: the bike can retain its sporty handling whilst improving comfort as the kilometres mount up.

On cycle paths, forest tracks or rough gravel sections, SOFTEX also helps to maintain better contact between the bike and the ground.

Shimano GRX800 Di2 12-speed

The Shimano GRX800 Di2 12V team this version of the NAII.

Specifically designed for gravel riding, the GRX groupset combines electronic precision, trail-optimised ergonomics and high-performance hydraulic braking.

The editing Berria includes, in particular:

• controllers Shimano GRX Di2 ST-RX825
• rear derailleur Shimano GRX Di2 RD-RX825
• front derailleur Shimano GRX Di2 FD-RX825
• crankset Shimano GRX FC-RX820-12
• 48/31-tooth double chainring
• 11–34-tooth cassette
• hydraulic brakes Shimano GRX BR-RX820

48/31 and 11-34: a versatile drivetrain

Choosing a crankset 48/31 teeth is particularly suitable for a versatile gravel bike.

The 48-tooth chainring allows you to maintain a good speed on the road and on rolling trails. The small 31-tooth chainring, on the other hand, offers a gear ratio better suited to climbs.

Used with a cassette 11–34, this gradation allows you to transition smoothly from tarmac sections to gravel climbs without having to make too many compromises.

Vision Team 30: a versatile set of wheels

This NAII configuration receives the Vision Team 30 Disc.

With their aluminium rims measuring 30 mm deep, the Team 30 models feature a semi-aero profile whilst prioritising durability and versatility. Vision the reference points for the disciplines Road, Gravel and Cyclocross. .

The build features 24 spokes at the front and 24 at the rear. The reinforced spoke lacing is particularly well suited to the stresses caused by disc braking. The hubs are fitted with sealed cartridge bearings.

Vision states a weight of 1,900 g per pair for Team 30 Disc.

Why do the Vision Are Team 30 tyres a good choice for a gravel bike ?

The Team 30 wheels are not designed to be the lightest on the market. Their appeal lies more in their versatility and their design, which is suited to everyday use.

They are particularly relevant for:

• recreational and competitive gravel cycling
• long runs
• mixed road/gravel routes
• the white paths
• forest tracks
• training sessions
• cyclists who prioritise reliability over cutting every last gram

They therefore form a coherent configuration for an NAII intended for regular use on different types of terrain.

Tyres up to 700 x 50C

The NAII’s frame and fork are compatible with tyres up to 700 x 50C. .

This feature offers a great deal of freedom in choosing how the bike handles.

With tyres measuring between 40 and 45 mm, the NAII can prioritise speed and efficiency on fast tracks.

With tyres measuring nearly 50 mm, the bike offers greater comfort, better grip and improved ability to handle rougher terrain.

Choosing the right tyre therefore becomes a key way of tailoring the NAII to one’s riding style.

Avanforce Airone GR integrated carbon cockpit

The NAII receives a coat hanger Avanforce Airone GR Integrated Gravel Carbon Handlebar.

The cable routing is fully integrated into the ICS2 system, giving the bike a particularly clean line and contributing to its aerodynamic design. The cockpit also features GPS and GoPro mounts.

Different handlebar sizes are available depending on the bike’s size and the chosen configuration.

A carbon seatpost integrated into the SOFTEX design

The NAII uses a Avanforce NAII Tibia Softex Seat Post made from UD carbon fibre with zero offset.

This seatpost contributes to the bike’s overall design philosophy by enhancing comfort and damping vibrations, complementing the frame’s SOFTEX system.

Braking Shimano GRX hydraulic

Braking is provided by the Shimano GRX BR-RX820 hydraulic disc brake.

The GRX system offers braking power suited to gravel riding, as well as good modulation – two important qualities when the terrain becomes wet, steep or uneven.

Hydraulic braking is also particularly useful with wide tyres and on long descents.

Naked Carbon Kerochalk: a finish that shows off the carbon to its best advantage

The colour Naked Carbon Kerochalk gives the Berria NAII has a particularly elegant identity.

This finish highlights the frame’s carbon look whilst giving it a technical and contemporary aesthetic. It is aimed at cyclists who prefer a understated, high-end finish to a very flashy colour scheme.

The result is a bike that combines a premium image with a genuine gravel identity.

A gravel bike that can go anywhere

The Berria The NAII BR GRX800 Di2 is designed for cyclists who want to venture off the beaten track without compromising on performance.

Thanks to the SOFTEX system, the 50C pneumatic clearance and the transmission Shimano The GRX Di2 can handle a wide variety of surfaces.

It is particularly suitable for:

• Fast Gravel route
• road and gravel rides
• long distances
• forest tracks
• snow-covered slopes
• hilly routes
• gravel rides
• sports training sessions
• lightweight bikepacking
• Gravel races

Our recommendation: If your priority is pure performance, upgrading to a lighter pair of carbon wheels at a later date could be an attractive option. On the other hand, for everyday, all-round use, the Team 30s provide a reliable foundation.

The true potential of the NAII will become apparent above all with the the right choice of tyres and tyre pressure. This is where you can adapt the bike’s characteristics to suit your rides.

Who is this bike for ?

The Berria The NAII BR GRX800 Di2 is particularly suited to cyclists who wish to:

• a top-of-the-range carbon gravel bike
• a 12-speed electronic gearbox
• a fast road bike
• dynamic handling on country lanes
• greater comfort on uneven terrain
• a high pneumatic capacity
• a versatile bike for long distances

Key strengths

• Frame Berria NAII Full Carbon HM3X
• Triple Monocoque Construction
• BGC Geometry
• Suspension SOFTEX 28 mm
• Shimano GRX800 Di2 12V
• 48/31 chainring set
• 11-34 cassette
• Hydraulic brakes Shimano GRX
• Avanforce Airone GR integrated carbon cockpit
• ICS2 Integrated Wiring System
• Avanforce NAII Tibia SOFTEX carbon seatpost
• Pneumatic clearance up to 700 x 50C
• Wheels Vision Team 30 Disc
• 30 mm aluminium rims
• 24 spokes at the front / 24 at the rear
• Wheels suitable for road, gravel and cyclocross
• Colours Naked Carbon Kerochalk
• Fast Gravel Philosophy
• An excellent balance between speed and comfort

Conclusion

The Berria NAII BR GRX800 Di2 12V Vision Team 30 Naked Carbon Kerochalk 2027 is a modern carbon gravel bike designed for cyclists who want to combine performance on the road, comfort on the trails and the freedom to explore.

Its setting Full Carbon HM3X, his suspension 28 mm SOFTEX, its transmission Shimano GRX800 Di2 12V, its pneumatic suspension up to 50C and its wheels Vision Team 30 make it a particularly versatile bike.

The colour Naked Carbon Kerochalk finally adds a premium finish that highlights the frame’s technical sophistication.

A fast, comfortable and versatile gravel bike, designed to take you from the road to the trails without ever losing the desire to go further.

Technical specifications

Frame

Model: Berria NAII Carbon
Material: Full Carbon HM3X
Construction: Triple Monocoque
Geometry: BGC
Suspension: SOFTEX, 28 mm travel
Bottom bracket: T47
Cables: ICS2 Full Internal Cable System
Derailleur hanger: UDH
Braking: Flat Mount 140 mm
Rear axle: 12 × 142 mm
Maximum tyre size: 700 x 50C

Fork

Model: Berria NAII BR Fork
Material: Full Carbon
Cables: Integrated ICS2
Pivot: 1-1/8" – 1-1/2" tapered
Brake: Flat Mount
Maximum disc size: 160 mm
Offset: 48 mm
Focus: 12 x 100 mm
Maximum tyre size: 700 x 50C

Transmission

Group: Shimano GRX800 Di2 12V
Controllers: Shimano GRX Di2 ST-RX825
Rear derailleur: Shimano GRX Di2 RD-RX825
Front derailleur: Shimano GRX Di2 FD-RX825
Crankset: Shimano GRX FC-RX820-12
Trays: 48/31 teeth
Cassette: Shimano CS-R8100 11-34
Channel: Shimano CN-M7100

Braking

Stirrups: Shimano GRX BR-RX820
Technology: disc brake

Wheels

Model: Vision Team 30 Disc
Material: aluminium
Profile: 30 mm
Shelving: 24 at the front / 24 at the rear
Bearings: waterproof cartridges
Technology: Tubeless Ready
Braking: Centre Lock / 6-hole, depending on part number
Compatibility: Shimano / SRAM depending on the freewheel body
Stated weight: 1,900 g per pair
Subjects: Road / Gravel / Cyclocross

Cockpit

Hanger: Avanforce Airone GR Integrated Gravel Carbon
Material: carbon
Cables: Fully integrated ICS2
Media: GPS and GoPro

Saddle and seat post

Seat post: Avanforce NAII Tibia Softex UD Carbon
Offset: 0 mm
Lengths: 300 / 350 mm
Saddle: Fizik Vento Argo X5
Width: 140 mm

Please note that the photo is for illustrative purposes only and is not contractually binding; this bike is fitted with the groupset and wheels specified in the title and description.