BESNIN 17 Degree Bike Stem, 31.8mm 60mm 70mm 90mm 110mm 130mm MTB Stem Mountain Bike Handlebar Stem for Bicycle, Road Bike, MTB, BMX, Cycling (Aluminum Alloy)

Product Information

Cycle Centre Congleton Limited 2021. Cyclestore is a trading name of Cycle Centre Congleton Limited. All Rights Reserved Company No. 05107467 | VAT No: 593 733 507 The standard size for most modern mountain and road bikes, with typical lengths of between 35mm and 80mm for MTB stems, 80mm and 100mm for gravel bikes and 90mm to 140mm for road bikes. 1 1/4in steerer, 31.8mm bar clamp Old-school bikes had a quill stem. This was an inverted L-shape, with the shaft of the stem slotting down into the top of the fork’s steerer tube, and secured by an expander bolt with an (in most cases) Allen key head at its top. If you are a regular rider, you may appreciate a neutral position with a slight rise in stem. Around 6 to 7 degrees of stem rise and a stem length that complements your position would suit you the best.

Quill stems went out of fashion because the contemporary bolt-on stem and fork design is stronger and lighter. It’s easier to manufacture too, because with a quill stem the steerer tube needs to be threaded, with a screw-on top headset bearing. Slowpoke wrote:I am trying to understand how to interpet the angle of a handlebar stem, and have a hard time with geometry. a right angle'd stem, would be horizontal if the steer tube were perpendicular. This would rise a little from horizontal when mounted on a typical angled head/ steer tube. Would not change if reversed (flipped). On that note, you can also change your stem length to adjust the reach from the saddle to the handlebar.

Rise

NB: some manufacturers quote the other way ie 83° which in reality is a 7° rise so don’t expect a near vertical stem! would rise or drop 8 degrees if the steer tube were perpendicular. This would rise a little more than the 84/6 if in the "flipped up" position, and would be a little lower in the flipped down position. Having the right stem on your bike can make all the difference in comfort and handling. Changing this small part is an easy way to tailor your bike to fit you better and meet your specific needs. You can also upgrade your stem to save weight or customize its colour. Types of Stems

Alloy stems are relatively cheap and light weight so they are the most common model available. Carbon stems are lighter and can be incredibly stiff but they’re also way more expensive so usually favoured by racers or weight weenies. Stems between 100-120mm of length are known as long stems and anything below 90mm is considered as short stems. Generally on a road bike stems tend not to be shorter than 90mm and longer than 130mm. Stem length has a big impact on the overall fit and ride of your bike. David Caudery / Immediate Media When choosing a stem the main things to consider are length, rise, bar diameter and material. Don’t get too hung up though, it’s a relatively easy decision making process when deciding what’s right for you. Stem length is one of a number of factors, along with head tube angle and fork rake, that affects a bike’s handling.

Deda Elementi Zero1 Road Stem

I want to replace the Deda stem with one that has SLIGHTLY more rise (and it HAS to be an Italian stem)

Cross-country and leisure oriented mountain bikers are more concerned with fit than handling when it comes to stem length. Competitive cross-country racers generally have stems with a negative angle or drop whereas recreational riders commonly have stems with a slight rise. Comfort and CruisersNewer bikes most likely require stems with a 1 and 1/8 in. steerer tube clamp and an oversized 31.8mm handlebar clamp. On average, it is best for casual riders to have a longer stem (70mm to 120mm) with a positive (6 to 10 degree) rise. It is worthwhile to discuss stem options and fit with qualified staff at your local bike shop. Found on some mountain bikes and also some drop-bar machines such as Giant’s cyclocross bikes. 1 1/8in steerer, 35mm bar clamp Bike stems look like a standard equipment without any science to it, however, they are highly influential when it comes to comfort and control. The wrong stem length will not only make it difficult to reach for the handlebars, it will also destabilize the steering and affect body position on the bike.