Name: KOOTU BERSERKER-GRX400 Carbon Gravel Bike
Brand: KOOTUBIKE
SKU: KCGB0001-BW-47
Price: 1599.0 USD
Availability: InStock
Rating: 5.0 (3 reviews)

KOOTU BERSERKER-GRX400 Carbon Gravel Bike

$2,199.00 $1,599.00 Save $600.00

Tax included. Shipping calculated at checkout.

Size chart

Parameter	470(S)	510(M)	540(L)	560(XL)
Recommend Height	160 -170cm(4'9''-5'2'')	170-178cm(5'3''-5'6'')	178-185cm(5'7''-6'2'')	185-199cm(Above 6'3'')
A Seat Tube (mm)	400	440	480	510
B Top Tube (mm)	530	543	562	583
C BB Drop(mm)	70	70	70	70
D Chainstay(mm)	430	430	430	430
E Scat Angle (°)	72.3°	73°	72.3°	71.7°
F Head Angle(°)	70.0°	70.5°	71°	71°
G Front Center(mm)	602	609	620	637
H Head Tube Length (mm)	100	130	150	165
I Fork Offset(mm)	45	45	45	45
J Reach (mm)	381	388	396.6	408.5
K Stack (mm)	519.0	549.2	570	584.2
L Frok Lenght(mm)	393	393	393	393
M Wheelbas (mm)	1022	1029.7	1040.6	1057.4
N Standover(mm)	765	765	791	814

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Looking for a high-performance carbon gravel bike that can handle any terrain? Look no further than the KOOTU BERSERKER GRX-400. This top-of-the-line bike boasts a lightweight carbon frame, a powerful Shimano GRX-400 drivetrain, and rugged, versatile tires that are perfect for gravel, dirt, and pavement. Whether you're racing, touring, or exploring off-road, the KOOTU BERSERKER is the ultimate choice for serious cyclists.

Weight:about 9.6kg(21.21lbs)
Internal cable routing design
T800 Carbon Fiber Frame,fork,seatpost
Gravel specific frame
SHIMANO GRX 400 20 Speed
Hydraulic disc brake
700C*40C Continental Tires
KMC Chain
Free Pedals Include

Pairs well with

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Model	KOOTU GRX-400 BERSERKER
Frame material	T800 grade carbon fiber, KOOTU logo
Fork material	T800 grade Carbon fiber, fork open 100mm
Handlebar	Aluminum,Gravel 480*31.8mm, 40 degrees of flare
Seatpost	T800 grade carbon fiber, 350mm
Thru axle	Hollow type, front M12100, rear M12142
Wheels	Aluminum, 700c,30mm depth.
Tires	40C Continental Terra ShieldWall (40-622)
Bottom bracket	GINEYEA BB51
Chain	KMC X10R
Crank	SHIMANO FC-RX600, 46-30T(170MM)
Shifting levers	SHIMANO ST-RX400
Front derailleur	SHIMANO FD-RX400
Rear derailleur	SHIMANO RD-RX400
Flywheels	SHIMANO CS-HG500 (11-13-15-17-19-21-23-26-30-34T)
Disc rotor	SHIMANO SM-RT70,140MM
Pedals	SANYUN LP-658A
Saddle	YBT, PU-leather

Parameter	470(S)	510(M)	540(L)	560(XL)
Recommend Height	160 -170cm(4'9''-5'2'')	170-178cm(5'3''-5'6'')	178-185cm(5'7''-6'2'')	185-199cm(Above 6'3'')
A Seat Tube (mm)	400	440	480	510
B Top Tube (mm)	530	543	562	583
C BB Drop(mm)	70	70	70	70
D Chainstay(mm)	430	430	430	430
E Scat Angle (°)	72.3°	73°	72.3°	71.7°
F Head Angle(°)	70.0°	70.5°	71°	71°
G Front Center(mm)	602	609	620	637
H Head Tube Length (mm)	100	130	150	165
I Fork Offset(mm)	45	45	45	45
J Reach (mm)	381	388	396.6	408.5
K Stack (mm)	519.0	549.2	570	584.2
L Frok Lenght(mm)	393	393	393	393
M Wheelbas (mm)	1022	1029.7	1040.6	1057.4
N Standover(mm)	765	765	791	814

Shipping to	Average Delivery Time	Bikes Shipping Cost
United States	6-12 business days	Free
Australia	7-15 business days	Free
Asia	6-12 business days	Free
Middle East	10-15 business days	Free
Canada	10-15 business days	Free
Mexico	10-15 business days	Free
Israel	6-10 business days	$200
India	6-12 business days	$150
Brazil	20-35 business days	$380
Europe	12-18 business days	Free

Shipping Information

Once your order has been placed, we'll send you a confirmation email with your order number.
When your order has been shipped, we'll send you an email with a tracking number and a link that you can track it online.
No Tariff will be required to our customers on the Standard shipping methods.

Processing Time

After we received your order. It usually takes 2-3 business days for production, assembly, debug, packing, and sent out (Some new models may take 10-13 working days). Because we want to make sure the customer gets the bike 90% pre-assembled.

14-days Free replacement: contact customer service for missing and critically-damaged parts or other quality-related issues. Our customer service team will help to arrange the replacement.

Our policy lasts 14 days. If 14 days have gone by since delivery, unfortunately we can’t offer you a refund or exchange.

Watch the manual: Download

Q:What is the tire pressure on this bike?

A:50-75PSI

Q:Is this bike all carbon fiber?

A:The frame, fork, and seatpost of this bike are made of carbon fiber.

Q:What is the maximum size of tire this bike is compatible with?

A:The maximum compatible tire size for this bike is 45C.

Q:What is the torque of the KOOTU bicycle screws?

A:1.Front/Rear Hub Axle：8-12N.m
2.Brake Caliper Fixing Bolt: 5N.m
3.Saddle Clamp Bolt: 6-8N.m
4.Hanger Core: 6-10N.m
5.Front Derailleur Fixing Bolt: 5-7N.m
6.Stem Clamp Bolt: 5-8N.m
7.Crankset Fixing Bolt: 12-14N.m
8.Chainring Fixing Bolt: 12-16N.m
9.Rear Derailleur Hanger Pivot Bolt: 8-10N.m
10.Bottle Cage Bolt: 4N.m
11.Bike Computer Mount Fixing Bolt: 4-5N.m
12.Stem Top Cap Bolt: 4-5N.m
13.Front/Rear Disc Rotor Locking Nut: 40N.m
14.Derailleur Cable Tension Bolt: 5-7N.m
15.Seatpost Clamp: 5-10N.m
16.Shifter Clamp Bolt: 6-8N.m
17.Rear Derailleur Hanger Fixing Bolt: 1-2N.m
18.Threaded Bottom Bracket: 30-50N.m

Revolutionize Your Ride with Our Gravel Bike Frames

Crafted exclusively for gravel enthusiasts, our bespoke gravel bike frames blend cutting-edge design with unrivaled durability, ensuring a thrilling journey through challenging terrains.

Unleash the Trail with Precision

Gravel bikes featuring a state-of-the-art carbon fiber frame. Engineered for performance and durability, these bikes redefine the limits of trail riding. The lightweight yet robust carbon construction ensures agile handling and maximum power transfer, allowing you to conquer any terrain with confidence

Internal cable routing design

Experience seamless aesthetics and enhanced aerodynamics with our internal cable routing design, elevating your ride to new levels of sleek sophistication and optimal performance

Reinforced bicycle frame

Unleash the power of resilience with our reinforced frame, meticulously engineered to conquer the toughest trails, providing riders with unmatched durability and unwavering stability for an adventure that knows no limits

Elevate Your Ride: Unveiling the Future of Cycling with Carbon Fiber Mastery

Showcasing the epitome of strength and lightweight precision, our carbon fiber components unveil a symphony of performance, seamlessly merging cutting-edge technology and sleek design for an unparalleled cycling experience

Carbon Fiber frame & Seatpost

Our carbon fiber frames redefine endurance and agility, delivering an unparalleled fusion of lightweight performance, vibration damping, and robust strength for the ultimate off-road cycling experience

Carbon fiber fork

Experience the pinnacle of gravel riding with our carbon fiber fork – where precision engineering meets lightweight resilience, offering unrivaled control, shock absorption, and responsiveness for a smooth and thrilling journey through any challenging terrain

Gravel Dominance with GRX400 Precision

SHIMANO GRX is Shimano's first kit designed specifically for gravel surfaces. Whether beginners or experienced riders, they can experience its smooth shifting, reliable braking, and excellent gravel riding comfort.

SHIMANO GRX400

SHIMANO ST-RX400

The textured GRX handlebar cover ensures stability on bumpy descents, while the anti-slip coated brake lever guarantees Shimano's excellent braking performance in wet or muddy conditions.

SHIMANO FD-RX400

The GRX front derailleur offers an extra 2.5mm clearance for enhanced mud handling, perfect with wider tires. Experience seamless precision and reliable performance, ensuring smooth gear transitions for the ultimate ride on any terrain

shimano rd-rx400

Designed for high-intensity riding and given this rear derailleur a narrow profile. It can effectively reduce chain vibration, improve chain retention, and effectively reduce the risk of scratches.

SHIMANO FC-RX600

where precision meets power, delivering optimal drivetrain efficiency and reliability for cyclists seeking top-tier performance on any terrain

SHIMANO BR-RX400

Engineered for precision and reliability, these disc brakes deliver exceptional stopping power, ensuring control and safety in diverse riding conditions

Hollow saddle

Meticulously designed for an ergonomic fit and optimal support, ensuring a pleasurable and pain-free ride

40C gravel tires

Conquer diverse landscapes with confidence using our 40C tires – the perfect blend of durability and traction, providing a smooth and stable ride on both challenging trails and city streets

Cost-effective Carbon Bike

KOOTU makes carbon fiber bicycles affordable for everyone with high-end bike configurations

Safety and quality assurance

Secure payment guarantee and 2-year frame warranty

WORRY FREE BUY

You can purchase Seel insurance services, and KOOTU will not earn any commission from the middle. The insurance premium rate is about 2.5%. Protect your parcel from delayed delivery, damage of breakage, loss.