Rock Machine Lukk 20 Flat Bar 28 bike, matte limerock grey
Rock Machine Lukk 20 Flat Bar 28 bike
Suitable not only for commuting to work, but also for weekend trips outside the city. Ride on cycle paths, paved and gravel roads and during weekend activities. If you ride more frequently, expect to do the necessary fine-tuning more regularly.
Aluminium frame
Lighter, relatively durable and stiff material that is affordable. The most widespread material for the production of bicycle frames.
Mechanical disc brakes
Safer and more efficient braking even in wet and muddy conditions. Exerting more force on the lever for a higher braking effect. The cable may be subject to corrosion. Heavier weight.
Rigid fork
You will appreciate the lighter weight and stiffness, especially when riding on the road or bike path. Minimal service.
28” wheels
Often marked as 700c. They usually have a narrower profile, lower weight and high stiffness. They are the standard, especially for road (CX, gravel), trekking, city and cross-country bikes.
| Frame |
Alloy Al-6061 T6 Custom tubing, Gravel Fun Geometry, BB BSA 68mm, Disc Brake Flat Mount, Road+ Standard, Fender&Carrier Ready, Replaceable RD Hanger, Inner Cable Routing
|
| Fork |
Gravel Specific, Alloy Custom Tubing
|
| Shifting |
Shimano Claris, SL-R2000
|
| Derailleur |
Shimano Claris, RD-R2000-GS
|
| Front derailleur |
Shimano Claris, FD-R2000-F
|
| Cassette |
Shimano CS-HG50-8, 11-34T
|
| Chain |
KMC Z8.3
|
| Cranks |
Shimano FC-RS200, 46-34T
|
| Brakes |
Tektro, MD-C550, dual piston
|
| Brake levers |
Shimano Claris, BL-R2000
|
| Brake discs |
SHIMANO SM-RT10, 160 mm/160 mm
|
| Rims |
Stars J20
|
| Front hub |
Shimano, HB-QC300
|
| Rear hub |
Shimano, FH-QC300
|
| Tires |
WTB Nano, 40 mm
|
| Seat post |
ONE1 Alloy, SP C255
|
| Saddle |
Selle Royal Flex
|
| Stem |
ONE1 Alloy, 31.8 mm, -8°
|
| Handlebars |
Flat Gravel
|
| Grips |
Herrmans, Luna Lock, Black
|
| Headset |
FSA No.42/48 ACB
|
| Bottom bracket |
Shimano BB-UN300
|
| Sex | Men, Unisex |
| Model year | 2025 |
| Gears | 2x8 |
| Groupset | Shimano Claris |
| Colour | matte limerock grey |
| Material | aluminium |
| Wheel material | Aluminium |
| Wheel diameter | 700C (28") |
| Brakes | Mechanical disc |
| Fork | Rigid |
| Control type | mechanical |
| product ID | 370948 |
| Bike size | S | M | L | XL |
|---|---|---|---|---|
| Height (cm) | < 165 cm | 165 - 175 cm | 175 - 185 cm | 185 - 195 cm |
All bicycles at the MTBIKER shop are new, not-ridden, from an official distributor and with a full warranty. Several brands even offer a lifetime warranty on the frame after registration. We perform all warranty services in MTBIKER stores after personal delivery or after sending the bike (or its part) by courier.
- The bicycle is taken out of the manufacturer's box
- The bicycle is assembled, inspected and adjusted (front and rear derailleur, shock, fork, wheels,...)
- The bicycle is carefully packaged back into a box and shipped
- If you order a bike for in-person pick-up or home delivery, the bike will be waiting for you assembled and checked
- If you order a bicycle via courier to your home address, the following must be done at home:
- Take the bike out of the box and carefully remove safety material and foils
- Mount handlebar to stem (1 minute, 4 or 5 mm hex hey is needed).
- Mount front wheel to fork (1 minute, without the need of any tools if the bike has a quick release).
- Loosen the screws in the headset, straighten the stem with the front wheel, tighten the upper screw on the fork and then tighten the headset (2 minutes, 4 or 5 mm hex key is needed).
- Mount the pedals to the cranks while lubricating the thread and carefully mounting it the right way (1 minute, 8 mm hex key or 15 mm wrench).
- Mount seat post to frame (10 seconds, without needing any tools if the frame has a quick link).
- Inflate the tires or fork and shock to desired pressure (2 minutes, pump needed).
- Check the tightening of hex keys and quick-releases (2 minutes, 4 and 5 mm hex key is needed).
- Go for a test drive! Handle your bicycle carefully until you get used to it. If the bike has disc brakes, their performance will be limited from now on - they will gain their full power after 4-5 strong brakes at higher speed.
All the answers to questions about delivery, payment, security, returns, warranty and much else.
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