

🚴♂️ Elevate your ride with precision and style—because every millimeter counts!
The Origin8 Pro Fit Alloy Ergo Stem is a high-performance bicycle stem made from 3D forged A6061-T6 aluminum, weighing only 135 grams. Designed for both road and mountain bikes, it features a versatile ±35° angle and fits steerer tubes of 1 or 1-1/8 inches with clamp diameters of 25.4 or 31.8mm. Its two-piece faceplate allows for easy installation, making it a trusted choice for riders seeking durability, lightweight control, and customizable fit.
| ASIN | B005DNTNPW |
| Best Sellers Rank | #224,082 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #241 in Bike Stems |
| Brand | Origin8 |
| Brand Name | Origin8 |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (308) |
| Date First Available | July 20, 2011 |
| Exterior Finish | shot-peened |
| Fastener Type | Hexagon Bolt |
| Head Angle | 35 Degrees |
| Head Style | ahead |
| Head Type | Threadless |
| Item Diameter | 1.13 Inches |
| Item Dimensions LxWxH | 9.05 x 4.85 x 2.7 inches |
| Item Hardness | Brinell 110-150 |
| Item Package Dimensions L x W x H | 5.8 x 4.6 x 1.5 inches |
| Item Weight | 2.72 ounces |
| Manufacturer | Origin8 |
| Manufacturer Grade | Grade 8 |
| Material | Multiple |
| Maximum Shear Strength | 275 MPa |
| Metal Type | Aluminum |
| Model Year | 2012 |
| Package Weight | 0.2 Kilograms |
| Part Number | 58436 |
| Size | 1" or 1-1/8" x 31.8-25.4/28.6-25.4 x 35d x 70mm |
| Style | Does Not Apply |
| Suggested Users | Does Not Apply |
| Thread Style | Threadless |
| Thread Type | Threadless |
| UPC | 072774584369 |
A**M
Good Stem
Did exactly what I needed. I have a 54cm road bike, and wanted to reduce the reach (might have longer legs than most my height, and therefore a shorter torso). I went from a 100mm stem to an 80mm (this one), and it helped even the weight distribution and made the ride more comfortable. The quality of the stem appears to be good, and it's fairly light. It looks good, and I'm happy with it. Mounting it to the bar is a bit trickier than for stem with a "plate", as with this stem you have two vertical brackets. Just ensure that you tighten them all very evenly so that there is an equal amount of screw left showing between the stem and brackets for all four screws.
M**E
Well made, good price
I used this on a 90's retro mountain frankenbike build. It worked well and was the only stem I could find that was short with a good upward angle. Note that this item is available in a variety of sizes and styles.
T**E
Nice riser stem
Ver nice riser stem for a mtb bike. Much more comfortable on the bike. Comparable in quality to the Easton stems that come stock on many "middle-high end" bikes. Recommend highly if you're looking for a solid riser stem. One word of warning. Beware of your front brake cable length and make sure housing is long enough if you're raising your bar with a riser stem. I worked for several years as a bike mechanic and saw several DIYers make this mistake and need housing replaced as well.
B**S
Awesome. Small, perfect fit for road bikes.
Fits all bike handle bar types! Very happy with this stems. My wife is petite and has a bad back. Her existing handle bars were way too far out on her road bike. This stem shortened the distance and makes rides much more comfortable for her. Note: I previously had returned a bike stem (60mm) which promised to fit a road bike. It didn't. This stem however works beautifully. Pros: - Fits all bike types, including my wife's road bike. - One of the shortest stems on the market. - Good price, especially on Amazon. - Easy to install, well-machine screws. Cons: - None!
C**.
Awesome
Holds bar firmly, looks good, nice quality
R**R
amazing value
Origin8 products are amazing. This stem was such a great price for the quality of the product. Shipping was fast and the customer service was great. I always knew where the product was at and it shipped on time which was really important seeing that it was a gift. The best thing about Origin8 products being online is the amazing value this stem is so light and strong. When i called to check and see if it was compatible with the other parts that i had ordered the sales team answered all of my questions and directed me to exactly what i needed. Thanks Origin8!
B**D
Great stem decent quality.
Decent height and length boost. Quality looks good. I was initially concerned with the double clamp. After install I really like the clean look of it. It allows you to see the adjustment lines on the bars super easy and looks very unobstructed. Used it to mount a Salsa Cow chipper onto a carbon steer tube works great. Minimal flex.
Y**K
Good stem.
Nothing much to say. Good price to quality ratio. I use this on my commuter (Rocky Mountain Hammer 1998) with a 620 mm Specialized handlebar. I got the 70 mm x 31.8 mm. I'm quite a small guy so I require a short stem on all my bikes. This one fit the bill and so far it's holding up well. It's pretty stiff, IMO. No problems as of yet. Highly recommended. UPDATE: Got the same one for my 96' Diamondback Response Sport, haven't installed but I got it on one day shipping. Still looks great and my last one still holds up well.
Trustpilot
3 weeks ago
5 days ago