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Planet X Kaffenback Shimano GRX RX810 Bike

Hit the road in style when you head out on the updated, modernised & ultra-capable Kaffenback. With a triple-butted steel frame, relaxed geometry, lightweight carbon fork and rack and mudguard mounts, It's the best four-season commuter available on the market and is now available with Shimano GRX RX810 1 x 11 Speed Drivetrain.

Shimano GRX RX810 1 x 11 Speed Drivetrain
Fulcrum Rapid Red 900 Wheelset
Tyre clearance up to 40mm (700C)
DN6 Chromoly Steel Frame with Carbon Fork
Approx Bike Weight (Medium) - 10.8kg

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$1,362.00

Shipping calculated at checkout.

Expect dispatch in 14 days

Available on Cycle to work

Small Medium Large XLarge

Rider Height	Suggested Frame Size
5′4″ to 5′8″	480mm / SML
5′8″ to 5′10″	500mm / MED
5′10″ to 6′0″	520mm / LRG
6′0″ to 6′3″	540mm / XL

		S	M	L	XL
A	Head Angle (degrees)	71.0	72.0	72.0	72.5
B	Head Tube (mm)	125	145	165	185
C	Top Tube Effective(mm)	535	550	570	590
D	Seat Tube Angle (degrees)	74.5	74.0	73.0	73.0
E	Seat Tube C-T (mm)	480	500	520	540
F	Chainstays (mm)	425	425	425	425
G	BB Drop (mm)	72	72	72	72
H	Stack (mm)	536	558	577	598
I	Reach (mm)	386	390	394	407
J	Front Centre (mm)	594	595	605	620
K	Wheelbase (mm)	1013	1014	1030	1045

🔧 Customise your bike

Quantity

Frame

The Kaffenback is a true Planet X classic. Elegant and timeless, it's narrow tubing is built using custom drawn chromoly steel giving the Kaffenback a unique, smooth and springy ride feel. Featuring the core geometry of a touring road bike, combined with that of a gravel voyager with full bottle, mudguard and pannier mounts.

Groupset

Shimano’s GRX series has been designed for pure gravel performance, with optimised gear ratios, off-road handling, and precise shifting. RX810 represents the top tier of 11 speed mechanical shifting. Hydraulic brakes levers incorporate SERVO WAVE technology for unrivalled stopping power. An integrated clutch retention system provides chain security even on the roughest of terrain.

Frame

The Kaffenback is a true Planet X classic. Elegant and timeless, it's narrow tubing is built using custom drawn chromoly steel giving the Kaffenback a unique, smooth and springy ride feel. Featuring the core geometry of a touring road bike, combined with that of a gravel voyager with full bottle, mudguard and pannier mounts.

Groupset

Shimano’s GRX series has been designed for pure gravel performance, with optimised gear ratios, off-road handling, and precise shifting. RX810 represents the top tier of 11 speed mechanical shifting. Hydraulic brakes levers incorporate SERVO WAVE technology for unrivalled stopping power. An integrated clutch retention system provides chain security even on the roughest of terrain.

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📏 Sizing and Geometry

Rider Height	Suggested Frame Size
5′4″ to 5′8″	480mm / SML
5′8″ to 5′10″	500mm / MED
5′10″ to 6′0″	520mm / LRG
6′0″ to 6′3″	540mm / XL

		S	M	L	XL
A	Head Angle (degrees)	71.0	72.0	72.0	72.5
B	Head Tube (mm)	125	145	165	185
C	Top Tube Effective(mm)	535	550	570	590
D	Seat Tube Angle (degrees)	74.5	74.0	73.0	73.0
E	Seat Tube C-T (mm)	480	500	520	540
F	Chainstays (mm)	425	425	425	425
G	BB Drop (mm)	72	72	72	72
H	Stack (mm)	536	558	577	598
I	Reach (mm)	386	390	394	407
J	Front Centre (mm)	594	595	605	620
K	Wheelbase (mm)	1013	1014	1030	1045

🔧 Build Kit

Stainless Steel M5 Bolt 22mm Thread Locking Individual

Selcof Carbon Steerer Fork Bung MK 4 / 23-24mm ID

Selcof Alloy Bolt Up Seatclamp / 29.8mm

Bike Build Packaging Rear Derailleur Protector

Selcof Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black

Token Omega Headset For Tapered 1" 1/8th – 1.5" Fork Steerer

🔧 Groupset

Shimano GRX RX810 Hydraulic Disc STI Lever & Flat Mount Disc Caliper / Left 1x

Shimano GRX RX810 Hydraulic Disc STI Lever & Flat Mount Disc Caliper / Right 11 Speed

Shimano Ultegra SM-BBR60 Bottom Bracket

Shimano GRX RX810 1x Chainset / 172.5mm / 42 Tooth

Shimano CS-M8000 11-Speed 11-42 Cassette

Shimano GRX RX812 Rear Mech (42T Max)

Shimano Ultegra HG-701 11 Speed Chain / 116 Links

Shimano Ultegra SMRT800 Centrelock Disc Rotor / 160mm

Shimano SM-MA-R160D/D Mount Adapter

Shimano SM-BH90 Olive And Connector Insert

SRAM 1.85mm Freehub Body Spacer / XDR / XD / HG

Finance with Newpay and Planet X

You could enjoy a credit limit of up to £5000, and once you’ve bought something, you can choose a payment plan to suit you. It’s super-easy to apply and we’ll even do a no-risk check first to see if you're eligible

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Easy Assembly

Assembling your new bike couldn't be easier. Every bike comes expertly packed at least 95% pre assembled, with step by step instructions to get the bike ready to roll.

So you can get out on that first ride without delay!

Hand Built in South Yorkshire

All Planet X, On One, Holdsworth and Titus Bikes are expertly hand built to order in South Yorkshire.

Every bike is comprehensively inspected before shipping to ensure your bike is perfect when it arrives at your door.

Not sure on your size? Get Fitted!

Get fitted to your bike at Planet X Headquarters by one of our trained fitters.

With our Mini Bike Fit, we can advise on sizing, optimise your ride for maximum comfort and efficiency and help you make the right component choices. all for a refundable deposit of £25.

Book Now!