BUCKLOS 70mm Bike Stem 17° Negative Rise 31.8mm MTB Road Bicycle
BUCKLOS 70mm Bike Stem 17° Negative Rise 31.8mm MTB Road Bicycle
BUCKLOS 70mm Ultralight Aluminum Bike Stem – 17° Negative Rise, 31.8mm Clamp
Upgrade your ride with the BUCKLOS 70mm Bicycle Stem — a precision-engineered, ultralight aluminum alloy stem designed for both MTB and road bike enthusiasts. Featuring a 17-degree negative rise and a 31.8mm handlebar clamp diameter, this stem delivers confident handling, a secure fit, and an aerodynamic riding position. Whether you're tackling technical trails or logging miles on the tarmac, this stem is built to perform.
Key Features
- Length: 70mm — ideal for precise front-end control
- Rise: 17° Negative — promotes a sporty, forward-leaning riding posture
- Handlebar Clamp Diameter: 31.1–32.5mm (compatible with standard 31.8mm bars)
- Fork Clamp Diameter: 28.6mm (fits most MTB and road bike forks)
- Height: 46–55mm
- Material: High-grade aluminum alloy — lightweight yet incredibly durable
- No high-concern chemicals — safe and reliable construction
- Compatible with MTB, road bikes, gravel bikes, and more
Why Choose the BUCKLOS Bike Stem?
BUCKLOS is a trusted name in cycling components, combining quality engineering with competitive pricing. This stem is CNC-machined from aircraft-grade aluminum alloy, keeping weight to a minimum without sacrificing strength or stiffness. The four-bolt faceplate provides even clamping force across your handlebars, while the secure fork clamp ensures rock-solid steering at all times.
Specifications
| Brand | BUCKLOS |
| Length | 70mm |
| Rise | 17° Negative |
| Handlebar Clamp Diameter | 31.1–32.5mm (31.8mm standard) |
| Fork Clamp Diameter | 28.6mm |
| Height | 46–55mm |
| Material | Aluminum Alloy |
| Country of Origin | Made in Mainland China |
Please Note
- Photos may vary slightly in color due to lighting conditions and monitor settings.
- Minor size variations (±1–2mm) may occur due to manual measurement methods.
You May Also Like
Looking for more cycling and outdoor accessories? Check out our 2m Folding Telescoping Tripod for Outdoor Activities or explore our Sheath Fold Knife Plier Bag for Trail Rides.
Learn more: HHS Move Your Way physical activity guidance
Frequently Asked Questions
Q: Is the BUCKLOS 70mm bike stem compatible with my road bike or MTB handlebars?
A: Yes! The BUCKLOS bike stem features a 31.1–32.5mm handlebar clamp diameter, making it fully compatible with standard 31.8mm road bike and MTB handlebars. The 28.6mm fork clamp fits most standard road and mountain bike forks.
Q: What does the 17-degree negative rise mean for my riding position?
A: A 17-degree negative rise means the stem angles downward from the fork steerer, lowering your handlebar position relative to the fork. This promotes a more aggressive, aerodynamic forward-leaning posture — popular with road cyclists and performance-oriented mountain bikers.
Q: What material is this bike stem made from, and how durable is it?
A: The BUCKLOS bike stem is CNC-machined from high-grade aluminum alloy, offering an excellent balance of low weight and high strength. It is built to withstand the rigors of both trail riding and road cycling over the long term.
Q: Will this stem fit my bike's steerer tube?
A: This stem is designed for a 28.6mm (1-1/8 inch) fork steerer tube, which is the most common standard size on modern road, gravel, and mountain bikes. Please verify your fork's steerer tube diameter before purchasing.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.