Bike Stem 31.8mm 35 Degree 70mm FOMTOR Bicycle Handlebar Stem Riser Suitable for BMX MTB Road Bike Mountain Bike (31.8 x 70mm)
Key features
- •Handlebar diameter 31.8mm (1.25''), front fork stem diameter 28.6mm (1-1/8"), Length: 70mm (center distance of the two holes)
- •Angle: +/- 35 degree.help to up or down the heigth of handlebar.
- •Light weight and durable. Weight.140g(0.3lb)
- •Constructed of high-strength CNC machined 6061 T6 aluminum alloy.
- •Suitable for most road bike, mountain bikes, track bike, MTB, BMX, DH, etc.
Bike Stem 31.8mm 35 Degree 70mm FOMTOR Bicycle Handlebar Stem Riser Suitable for BMX MTB Road Bike Mountain Bike (31.8 x 70mm)
List Price: $36.84$33.16DEALYou Save: $3.68 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 22, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.8
out of 5
Based on 6 reviews
5★
83%
4★
17%
3★
0%
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Perfect for riser. Geometry calculations here...
James✓ Verified Purchase•May 18, 2018
Lightweight and perfect. Keep in mind when you get a 70mm stem with a riser, the functional length is not 70 degrees but less. You have to use a geometry calculator to figure it out (or do a rough estimate). Think of it like a right triangle, the center of the bars/tube are points, and the 70mm is the hypotenuse. With the rise angle being 35 degrees, the actual rise therefore is 40mm and the functional stem length (added reach) is 57mm.
solved creaks and pops of an adjustable stem
Stephen S✓ Verified Purchase•May 12, 2018
The stem was a replacement for a Felt Adjustable 110mm stem. The adjustable stem was good for my position correct with my new Jones H-Bar, but not stable enough for continued use (many creaks and pops). The Uno 31.8 35 degree was a perfect replacement with the correct positioning. The quality and finish is very nice. Everything fit great. The creaks & pops noise that I had with the adjustable stem is now gone. Very tight and stable solution,
Fast and fantastic.
Gary McCarver✓ Verified Purchase•May 11, 2018
Absolutely perfect. Delivered quickly ... easy to install ... high quality ... great price for a specialty part. Thanks.
Five Stars
Carol W✓ Verified Purchase•May 11, 2018
Easy install. Provides the height increase I needed
Four Stars
B. Walker✓ Verified Purchase•May 2, 2018
Would been five stars but one of the screws was stripped so I returned it.
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