




⚡ Elevate your ride with precision and style—because your bike deserves the best.
The Origin8 Pro Fit Alloy Ergo Stem is a lightweight, versatile bicycle stem made from high-grade A6061-T6 forged aluminum. Designed to fit multiple handlebar diameters and steerer tube sizes, it offers an adjustable ±35° angle for ergonomic customization. Weighing just 135 grams, it combines durability with performance, backed by Origin8’s trusted reputation for quality.
| Manufacturer Grade | Grade 8 |
| Head Style | ahead |
| Color | Black |
| Fastener Type | Hexagon Bolt |
| Brand | Origin8 |
| Thread Type | Threadless |
| Item Diameter | 1.13 Inches |
| Item Hardness | Brinell 110-150 |
| Size | 1" or 1-1/8" x 31.8-25.4/28.6-25.4 x 35d x 70mm |
| Metal Type | Aluminum |
| Head Type | Threadless |
| Compatible groove diameter | 1.13 Inches |
| Set Screw Thread Type | UNC |
| Head Angle | 35 Degrees |
| UPC | 072774584369 |
| Manufacturer | Origin8 |
| Item Package Dimensions L x W x H | 5.8 x 4.6 x 1.5 inches |
| Package Weight | 0.2 Kilograms |
| Item Dimensions LxWxH | 9.05 x 4.85 x 2.7 inches |
| Item Weight | 0.17 Pounds |
| Brand Name | Origin8 |
| Suggested Users | Does Not Apply |
| Part Number | 58436 |
| Model Year | 2012 |
| Style | Does Not Apply |
C**.
Awesome
Holds bar firmly, looks good, nice quality
R**.
Great Product,Fast Shipping
Fits beautifully
T**Y
Poor finish. Quality hardware. Meh.
I finally broke down and admitted that I'm getting older and need an upright posture on my road commuter. So...i bought this stem as there are few choices that are not black or some obnoxious color.The stem is adequate. It's more cheaply made than other origin8 products I have bought. The finish is horrible to boot. I'll probably learn to live with it, but it's nothing too be proud about. It's poor finish will stick out like a doe thumb in when decently appointed bikes. But, it's hard to find polished stems or steel ones. I recommend searching for vintage options or doing out big bucks for a better one-which I would have done if I could have found one!So .. I'm thankful i found it, but disappointed in it's quality. The universal sizing really amplifies the fact that you are truly strapping soft aluminum straps around your handlebar stretched tightly and held on by some quality stainless bolts.One thing to consider, you may have to increase the length of your brake cable if you are coming from a low rise stem. I now have to, though I didn't think of the possibility.
T**D
Origin8 Pro Fit Alloy Ergo Stem, 1-1/8" x 25.4 x 17-Degree x 90mm
I felt a little stretched out on my bike. I wanted to change out the generic 100mm stem that came with it to a 90 mm. The construction and finish on the Origin8 was much nicer than the original. One note, the stack height on this stem is 40mm, my original stem was 45mm. I need to install an additional 5mm spacer on the steering tube in order to get the top cap bolt to tighten up everything properly. Also, I used a little blue LocTite on the face plate bolts to keep them from coming loose.
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.
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!
J**N
Well made, but hard to decipher the correct size.
Once I got the correct size it installed very easily and the quality was very good. The item came quickly. I was happy with the product. But it was very confusing for a novice like myself to decipher the correct size. There should be a way to know what number is related to the size of the vertical stem, the horizontal handlebar, and the distance between them. Also is the distance center to center?
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!
Trustpilot
3 weeks ago
1 month ago