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The "Grinder 3" model from the "Bulls" brand, released in 2023, is a versatile and robust gravel bike that stands out for its high-quality components and well-thought-out design. The frame is made from 6061 aluminium with smooth welding and internal cable routing, which not only ensures a clean appearance but also makes maintenance easier. Furthermore, the frame is bikepacking-ready, making the bike ideal for longer tours and adventures. The maximum permissible weight is 125 kg.
The “Grinder 3” is fitted with SHIMANO GRX BR-RX400 disc brakes featuring 160 mm Centre Lock rotors at the front and rear, ensuring reliable braking performance. The gear system consists of a SHIMANO GRX RD-RX400 with 20 speeds, controlled by SHIMANO GRX ST-RX400 shift levers. The front derailleur is also a SHIMANO GRX FD-RX400. The SHIMANO GRX FC-RX600 crankset offers a gear ratio of 46/30T, whilst the SHIMANO CS-HG50-10, 10-speed cassette has a range of 11–36T. Power is transmitted via a SHIMANO CN-HG54-10 chain.
The ‘Grinder 3’ fork is made of aluminium and contributes to the bike’s stability and steering precision. For lighting, the bike is equipped with MonkeyLink Recharge front and rear lights, although these are not included in the scope of delivery. The handlebars are a Gravel S model, fitted with 3mm Comfortgriptape grips. The stem is an MTB-S model and is CCS Slot Mount ready. The headset is an FSA ORBIT C40ACB (NO.42/ACB).
The bike’s rims are DDM-2, and the tyres are SCHWALBE G-ONE ALLROUND Perf with RaceGuard and TLE in size 40-622. The hubs feature Centre Lock and quick-release mechanisms for easy maintenance and quick wheel changes. The saddle is a BULLS Gravel model, mounted on a BULLS aluminium seatpost.
The “Grinder 3” from Bulls costs €1,699 and offers a balanced combination of performance, comfort and versatility, making it an excellent choice for gravel enthusiasts and bikepacking adventurers.
| Brakes | SHIMANO GRX BR-RX400 |
| Rear brake disc | 160 mm / Centre Lock |
| Frame | 6061 aluminium, smooth welds, internal cable routing, bikepacking-ready |
| Drivetrain | SHIMANO GRX RD-RX400 |
| Shift levers | SHIMANO GRX ST-RX400 |
| Front derailleur | SHIMANO GRX FD-RX400 |
| Number of gears | 20 |
| Fork | Aluminium grinder |
| Crankset | SHIMANO GRX FC-RX600 46/30T |
| Sprocket | SHIMANO CS-HG50-10, 10-speed, 11-36T |
| Drive | SHIMANO CN-HG54-10, 10-SPD |
| Headset | FSA ORBIT C40ACB (NO.42/ACB) |
| Handlebar | Gravel S |
| Grips | Comfortgriptape 3mm |
| Stem | MTB-S, CCS Slot Mount ready |
| Saddle | BULLS Gravel |
| Seatpost | BULLS Aluminium |
| Rims | DDM-2 |
| Tires | SCHWALBE G-ONE ALLROUND Perf, RaceGuard, TLE 40-622 |
| Front light | MonkeyLink Recharge (lighting not included in the scope of delivery) |
| Rear light | MonkeyLink Recharge (lighting not included in the scope of delivery) |