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Ships within 48 hours · Estimated delivery Jul 2 - Jul 7
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Description
renn gravel bike Gravelbike RINOS Sandman 4 – RinosbikeThe Sandman 4 represents our approach to building an accessible gravel bike without compromising on the components that matter. At its core is Shimano's GRX400 groupseta dedicated gravel drivetrain that brings purpose built features to this price point. The hydraulic disc brakes provide consistent stopping power in wet and dry conditions, while the gravel optimized brake hoods are shaped for comfort during long days in the saddle. The TORAY T800
The Sandman 4 represents our approach to building an accessible gravel bike without compromising on the components that matter. At its core is Shimano's GRX400 groupset—a dedicated gravel drivetrain that brings purpose-built features to this price point. The hydraulic disc brakes provide consistent stopping power in wet and dry conditions, while the gravel-optimized brake hoods are shaped for comfort during long days in the saddle.
The TORAY T800 carbon frame delivers a genuine weight advantage at 9.8kg complete. Carbon's natural vibration-damping properties become noticeable after a few hours of riding, reducing hand fatigue and keeping you comfortable on rough surfaces. The frame's geometry is designed specifically for gravel riding—stable enough for confident descending on loose terrain, yet responsive enough for quick handling when you need it.
We equipped the Sandman 4 with thoughtful details that extend its capability. The internal cable routing protects your brake lines and shift cables from the elements. The flared drop bars provide extra control on technical sections. The Novatec hubs spin smoothly and are easy to service. Every touchpoint—from the ROCKBROS saddle to the carbon stem—is chosen to support long rides across varied terrain.
Available in four distinctive colorways and five frame sizes spanning 150 cm to over 200 cm rider heights, the Sandman 4 fits a wide range of cyclists. Whether you're exploring local gravel roads, commuting on mixed surfaces, tackling weekend bikepacking trips, or training for gravel events, this bike adapts to your riding style. Manufactured in the EU to our quality standards, each Sandman 4 is built to last through seasons of hard riding.
Sizing Guide
Choose the frame size that matches your height for optimal comfort and performance.
Size 50 cm (XS)
150–160 cm
Size 52 cm (S)
160–170 cm
Size 54 cm (M)
170–180 cm
Size 56 cm (L)
180–190 cm
Size 58 cm (XL)
190–200+ cm
Technical Specs
| Model | Sandman 4.0 |
| Manufacturer | Rinos |
| Color Options | Black/Green, Black/Sand (Ivory), Gold, Blue |
| Wheel Size | 28 inch (700c) |
| Frame Sizes Available | 50 cm (XS) / 52 cm (S) / 54 cm (M) / 56 cm (L) / 58 cm (XL) |
| Rider Height for 50 cm (XS) | 150–160 cm |
| Rider Height for 52 cm (S) | 160–170 cm |
| Rider Height for 54 cm (M) | 170–180 cm |
| Rider Height for 56 cm (L) | 180–190 cm |
| Rider Height for 58 cm (XL) | 190–200+ cm |
| Complete Bike Weight | 9.8 kg |
| Shipping Weight | 13.8 kg |
| Frame | Rinos, Toray T800 Carbon |
| Fork | Rinos, Toray T800 Carbon |
| Handlebar | Rinos Carbon, 420/440 mm |
| Stem | Rinos Carbon |
| Seat Post | Rinos Carbon, 27.2 mm |
| Saddle | ROCKBROS |
| Shifters | Shimano GRX ST-RX400 (20-speed, 2×10) |
| Rear Derailleur | Shimano GRX RD-RX400 (with Shadow RD+ clutch) |
| Front Derailleur | Shimano GRX FD-RX400 |
| Brakes | Shimano GRX BR-RX400 Hydraulic Disc |
| Crankset | Shimano GRX FC-RX600, 46-30T |
| Cassette | Shimano CS-HG500, 11-34T (10-speed) |
| Chain | Shimano HG54-10 |
| Pedals | None (not included) |
| Wheels | Rinos 700C × 28H |
| Hubs | Novatec 28H |
| Tires | CST 700 × 40C with sidewall protection |
| Valve | Presta 60mm |
| Bikepacking Mounts | 26 mounting points for bags and accessories |
| Accessories Included | Tools, Assembly Manual |
Installation Guide
Your Sandman 4 arrives nearly fully assembled. Simply attach the handlebar, seat post, pedals, and front wheel following the included manual. Fine-tune the hydraulic disc brakes and gear shifting to your preference, then head out for your first ride.
Built for riders who want a versatile gravel bike ready to ride from day one. Whether this is your first gravel bike or you're adding to your collection, the Sandman 4 handles weekend trips, daily rides, and longer tours without needing upgrades. Ready to take you wherever curiosity leads.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy