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PRO FRS Stem 31.8 x 50mm Black/White

Pro

PRO FRS Stem 31.8 x 50mm Black/White

Regular price $57.00 Full price
Sale price $57.00
Club price
Regular price $59.99 Full price
19% Off Full Price
Zoom Heads Up Threadless Head Stem Black

Bikecorp

Zoom Heads Up Threadless Head Stem Black

Regular price $40.00 Full price
Sale price $40.00
Club price
Regular price $49.95 Full price
19% Off Full Price
BBB Highsix OS Adjustable Stem 31.8 x 90mm +40/-30 Rise

BBB

BBB Highsix OS Adjustable Stem 31.8 x 90mm +40/-30 Rise

Regular price $72.00 Full price
Sale price $72.00
Club price
Regular price $89.99 Full price
19% Off Full Price
BBB Highsix OS Adjustable Stem 31.8 x 110mm +40/-30 Rise

BBB

BBB Highsix OS Adjustable Stem 31.8 x 110mm +40/-30 Rise

Regular price $72.00 Full price
Sale price $72.00
Club price
Regular price $89.99 Full price
19% Off Full Price
BBB Highsix OS Adjustable Stem 31.8 x 130mm +40/-30 Rise

BBB

BBB Highsix OS Adjustable Stem 31.8 x 130mm +40/-30 Rise

Regular price $72.00 Full price
Sale price $72.00
Club price
Regular price $89.99 Full price
9% Off Full Price
Satori Stem Riser 1-1/8''

BPW

Satori Stem Riser 1-1/8''

Regular price $45.00 Full price
Sale price $45.00
Club price
Regular price $49.99 Full price
Pro Vibe Carbon Road Stem 120mm x 31.8mm Plus/Minus 8 Degrees

Pro

Pro Vibe Carbon Road Stem 120mm x 31.8mm Plus/Minus 8 Degrees

Regular price $399.00 Full price
Sale price $399.00
Club price
Regular price $419.99 Full price
PRO Vibe Superlight Road Stem 31.8 x 100mm 6 Deg Black

Pro

PRO Vibe Superlight Road Stem 31.8 x 100mm 6 Deg Black

Regular price $299.00 Full price
Sale price $299.00
Club price
Regular price $339.99 Full price
25% Off Full Price
BBB Roadforce II OS Stem 31.8 x 80mm +/- 6 Rise

BBB

BBB Roadforce II OS Stem 31.8 x 80mm +/- 6 Rise

Regular price $52.00 Full price
Sale price $52.00
Club price
Regular price $69.99 Full price
29% Off Full Price Clearance
Deity Cavity Stem 31.8 x 35mm Purple

Deity

Deity Cavity Stem 31.8 x 35mm Purple

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $169.99 Full price
24% Off Full Price Clearance
BBB Highsix Adjustable Stem (90mm)

BBB

BBB Highsix Adjustable Stem (90mm)

Regular price $60.00 Full price
Sale price $60.00
Club price
Regular price $79.99 Full price
BPW Riser for Ahead Stem 1 1/8'' Black

BPW

BPW Riser for Ahead Stem 1 1/8'' Black

Regular price $36.00 Full price
Sale price $36.00
Club price
Regular price $39.99 Full price
Kink Track BMX Stem 50mm Matte Black

Kink

Kink Track BMX Stem 50mm Matte Black

Regular price $104.00 Full price
Sale price $104.00
Club price
Regular price $109.99 Full price
25% Off Full Price
BBB Roadforce II OS Stem 31.8 x 60mm +/- 6 Rise

BBB

BBB Roadforce II OS Stem 31.8 x 60mm +/- 6 Rise

Regular price $52.00 Full price
Sale price $52.00
Club price
Regular price $69.99 Full price
PRO LT Reversable Stem 31.8 x 70mm +/- 6 Deg Rise

Pro

PRO LT Reversable Stem 31.8 x 70mm +/- 6 Deg Rise

Regular price $57.00 Full price
Sale price $57.00
Club price
Regular price $60.00 Full price
Deity Copperhead Stem 35 x 50mm Black

Deity

Deity Copperhead Stem 35 x 50mm Black

Regular price $175.00 Full price
Sale price $175.00
Club price
Regular price $179.99 Full price
BBB HighSix OS Adjustable Stem 35 x 110mm +/- 40 Rise Black

BBB

BBB HighSix OS Adjustable Stem 35 x 110mm +/- 40 Rise Black

Regular price $85.00 Full price
Sale price $85.00
Club price
Regular price $89.99 Full price
16% Off Full Price
Deity Copperhead Stem 31.8 x 35mm Purple

Deity

Deity Copperhead Stem 31.8 x 35mm Purple

Regular price $149.99 Full price
Sale price $149.99
Club price
Regular price $179.95 Full price
16% Off Full Price
Deity Copperhead Stem 35 x 35mm Red

Deity

Deity Copperhead Stem 35 x 35mm Red

Regular price $149.99 Full price
Sale price $149.99
Club price
Regular price $179.95 Full price
16% Off Full Price
Deity Copperhead Stem 35 x 50mm Purple

Deity

Deity Copperhead Stem 35 x 50mm Purple

Regular price $149.99 Full price
Sale price $149.99
Club price
Regular price $179.95 Full price
17% Off Full Price
Deity Copperhead Stem 35 x 50mm Bronze

Deity

Deity Copperhead Stem 35 x 50mm Bronze

Regular price $149.00 Full price
Sale price $149.00
Club price
Regular price $179.95 Full price
PRO LT Alloy MTB Stem 40mm (31.8mm Clamp / 0° Rise)

Pro

PRO LT Alloy MTB Stem 40mm (31.8mm Clamp / 0° Rise)

Regular price $50.00 Full price
Sale price $50.00
Club price
Regular price $55.00 Full price
BBB HighSix OS Adjustable Stem 35 x 90mm +/-40 Deg Black

BBB

BBB HighSix OS Adjustable Stem 35 x 90mm +/-40 Deg Black

Regular price $80.00 Full price
Sale price $80.00
Club price
Regular price $89.99 Full price
Mission Control BMX Stem 50mm Gold

Mission

Mission Control BMX Stem 50mm Gold

Regular price $48.00 Full price
Sale price $48.00
Club price
Regular price $50.00 Full price
MJ Cycle Alloy Stem Riser 117mm with 10mm Spacer

KWT

MJ Cycle Alloy Stem Riser 117mm with 10mm Spacer

Regular price $34.95 Full price
Sale price $34.95
Club price
Regular price $39.95 Full price
FSA ACR Stem 100mm

Merida

FSA ACR Stem 100mm

Regular price $85.00 Full price
Sale price $85.00
Club price
Regular price $90.00 Full price
15% Off Full Price
BBB Roadforce II OS Stem 31.8 x 110mm +/- 6 Rise

BBB

BBB Roadforce II OS Stem 31.8 x 110mm +/- 6 Rise

Regular price $59.00 Full price
Sale price $59.00
Club price
Regular price $69.99 Full price
Mission Control BMX Stem 50mm Oil Slick

Mission

Mission Control BMX Stem 50mm Oil Slick

Regular price $65.00 Full price
Sale price $65.00
Club price
Regular price $70.00 Full price
OneUp Components Stem 50mm Length Black

OneUp Components

OneUp Components Stem 50mm Length Black

Regular price $145.00 Full price
Sale price $145.00
Club price
Regular price $149.99 Full price
16% Off Full Price
BPW Ahead BMX Stem 50x28.6x22.2mm Black

BPW

BPW Ahead BMX Stem 50x28.6x22.2mm Black

Regular price $25.00 Full price
Sale price $25.00
Club price
Regular price $30.00 Full price
35% Off Full Price
Pro Stem LT OS 110mm 30-40Deg Black

Pro

Pro Stem LT OS 110mm 30-40Deg Black

Regular price $45.00 Full price
Sale price $45.00
Club price
Regular price $69.99 Full price
FSA 21 ACR Stem 90mm (Suits Reacto)

Merida

FSA 21 ACR Stem 90mm (Suits Reacto)

Regular price $125.00 Full price
Sale price $125.00
Club price
Regular price $129.99 Full price
FUNN Equalizer Zero Stem 50mm Length 31.8mm Diameter Grey

FUNN

FUNN Equalizer Zero Stem 50mm Length 31.8mm Diameter Grey

Regular price $119.00 Full price
Sale price $119.00
Club price
Regular price $124.99 Full price
Satori Heads-Up Stem Riser 117mm 1 1/8'' Silver

BPW

Satori Heads-Up Stem Riser 117mm 1 1/8'' Silver

Regular price $45.00 Full price
Sale price $45.00
Club price
Regular price $49.99 Full price
BBB Highsix Adjustable Stem 25.4 x 130mm -30/+40° Rise

BBB

BBB Highsix Adjustable Stem 25.4 x 130mm -30/+40° Rise

Regular price $85.00 Full price
Sale price $85.00
Club price
Regular price $87.99 Full price
15% Off Full Price
Headset Spacer Set Black 1 1/8

BPW

Headset Spacer Set Black 1 1/8

Regular price $11.00 Full price
Sale price $11.00
Club price
Regular price $12.99 Full price

Find Your Size

Step 1: Measure your height

  • Take off your shoes
  • Stand with your back straight against a wall
  • Balance a book on your head to mark your height on the wall
  • Measure your height by the distance from the floor to the mark
cm

Find Your Size

Step 2: Adjust your inseam

  • Based on your height, we’ve calculated a starting point.
  • You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
  • Inseam typically falls with 5cm of the average.
cm

Find Your Size

Your results

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Find Your Size

We have saved your measurements.

Recommended sizes will now be highlighted on the page.

Things to Consider When Shopping for Stems

When shopping for bicycle stems, the most important thing to consider is how a stem affects your riding position and overall comfort on the bike. Stems control the reach and height of your handlebars, so choosing the right length and rise can make a significant difference to how your bike feels, whether you ride road, mountain, or commuter. A shorter stem generally creates quicker, more responsive handling, while a longer stem stretches you out for a more aggressive position. Rise angle also plays a role, with higher-rise stems suiting riders who prefer a more upright, comfortable posture. If you are replacing an existing stem, matching the clamp diameter to your handlebars and the steerer diameter to your fork is essential before purchasing. Handlebar Stems are one of the most effective ways to fine-tune your fit without overhauling your entire cockpit setup.

Commonly Asked Questions about Stems

Related Categories

Expert Advice

Handlebars Buying Guide
Buying Guides

Handlebars Buying Guide

Handlebar design and dimensions are integral to how your bike handles and ultimately, how well it fits you. Bikes will generally come with handlebars of the appropriate size and shape, however, an upgrade can give you that extra performance edge. Road Bike Handlebars The most important consideration when buying road bike handlebars is width with the goal being to try and match the width of the bars to your shoulders to ensure a comfortable riding position. Secondly, you'll need to decide on what shape you require. The curve in road bike handlebars is referred to as 'drop' with a larger drop allowing for a more aggressive and aerodynamic riding position, however if you're not confident you'll be able to stay down in your drops for long periods of time then a more compact design might be the best for you. Finally, you should consider what material you'll require. Road bike bars are available in both carbon and aluminium and the choice largely depends on how much weight you want to save vs. how deep your pockets are. Shop Road Handlebars Mountain Bike Handlebars As is the case with road bikes, mountain bike handlebars come in a variety of widths to suit different rider sizes and styles. Wider bars provide greater control in corners, but can be a handful around obstacles in a tight and twisty trail. If you're into downhill riding then you'll want extra strong bars to put up with the rough ground and heavily landings you'll be encountering on the trails, whereas if cross-country riding is more your style then you will be more concerned with weight rather than strength. It is also important to ensure that you get the correct diameter bar to fit your stem with the most common size being 31.8mm. The final consideration to make is rise, which refers to how much higher the ends of the bars sit in relation to the centre clamp. A lower rise gives a more aggressive riding position however won't be as comfortable over longer rides as bars with a larger rise. Shop MTB Handlebars

Oct 8, 2025
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Bike Stems Buying Guide
Buying Guides

Bike Stems Buying Guide

The right size bike stem will greatly improve your riding efficiency and comfort. They are available in varying lengths to accommodate riders of different heights. Short stems provide a more upright riding position. While a longer stem will produce a more 'stretched out' position. Stems are also available in a variety of angles which allows you to effectively raise or lower your handlebars to achieve the optimal riding position. See All Bike Stems

Oct 8, 2025
Read More
Easy Bike Maintenance Velo Academy
Cycling Advice

Easy Bike Maintenance Velo Academy

No matter how often you ride, it's well worth learning a few things about how to maintain and adjust your bike. 99 Bikes and Velo Academy have put together a series of videos to help you learn a few basic procedures to help you ride more comfortably, and possibly also get your out of a sticky situation (like failing brakes!) Adjust Seat and Handlebars In this video you'll learn how to adjust your bike seat and handlebars to make riding as comfortable as possible. For this, you'll need a torque wrench. Adjust Brakes In this one, you'll find out what to do if you notice your brakes aren't sitting quite right. You'll need an allen key or multi-tool. Clean and Lubricate a Chain In this video, you'll learn how to clean and re-lubricate your chain. You'll be needing citrus degreaser, chain cleaner, chain lubricant, water and a clean rag. Fix a Flat Tyre Finally, this video will show you how to change a flat tyre. For this, you'll need tyre levers, a new inner tubeC and a pump. See All Tools and Maintenance

Jul 3, 2025
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