MenuMenuModern Bike

45 mm Bicycle Stems

Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.

SortSort

Showing 49 products:

Origin8 Flow 3D MTB Stem, 45x31.8x28.6 0d, Black
Origin8 Flow 3D MTB Stem, 45x31.8x28.6 0d, Black

3D forged AL6061-T6 alloy construction 40mm stack height 4 bolt front loading faceplate design ISO-Mountain safety certification … read more

15% offretail $34.99 your price $29.75

BuyBuyPART NUM 200739
Tag Metals T1 Stem, 31.8 x 45mm, Black
Tag Metals T1 Stem, 31.8 x 45mm, Black

CNC machined 2014 aluminum body with 4-bolt bar clamp TAG speed adjust bar markings for quick and easy set up 166-222g including bolts … read more

your price $109.99 + ships free

BuyBuyPART NUM 605727
Promax Impact Mini 45mm Top Load Stem 1" Blue
Promax Impact Mini 45mm Top Load Stem 1" Blue

Item Specifications Color: Blue Reach: 45 Stem Type: Top Load … read more

your price $42.00 + ships free

BuyBuyPART NUM 403864
Ritchey WCS Trail Stem: 45mm, +/- 0, 31.8, 1-1/8, Blatte
Ritchey WCS Trail Stem: 45mm, +/- 0, 31.8, 1-1/8, BlatteRitchey

Ritchey Stems 3D Forged 2014 alloy C220 with forward facing bolt design for easy installation 220 degree, extra-wide bar clamp improves … read more

your price $89.95 + ships free

BuyBuyPART NUM 383693
Tag Metals T1 Stem, 35 x 45mm, Black
Tag Metals T1 Stem, 35 x 45mm, Black

CNC machined 2014 aluminum body with 4-bolt bar clamp TAG speed adjust bar markings for quick and easy set up 166-222g including bolts … read more

your price $109.99 + ships free

BuyBuyPART NUM 833689
BOX Components Cusp Stem 45mm +/- 0 degree 35mm 1-1/8" Threadless Black
BOX Components Cusp Stem 45mm +/- 0 degree 35mm 1-1/8" Threadless Black

Item Specifications Color: Black Rise: 0 Steerer Clamp Diameter: 1-1/8" Reach: 45 … read more

10% offretail $99.99 your price $89.99 + ships free

BuyBuyPART NUM 680941
Spank Spoon 350 Stem - 45mm, 35mm Clamp, +/-0, Rasta
Spank Spoon 350 Stem - 45mm, 35mm Clamp, +/-0, Rasta

Spank Spoon Stems feature unique style, modern geometry, and rock-solid construction, without the heavy price tag suitable for all disciplines. … read more

your price $59.99

BuyBuyPART NUM 858510
Spank Spoon 350 Stem, 35 x 45mm, Black
Spank Spoon 350 Stem, 35 x 45mm, Black

Strong yet competitively lightweight alloy single crown stem for all disciplines 6-Series alloy is 3D forged and CNC optimized Unique … read more

your price $49.99 + ships free

BuyBuyPART NUM 563710
Spank Spoon 350 Stem - 45mm, 35mm Clamp, +/-0, Green
Spank Spoon 350 Stem - 45mm, 35mm Clamp, +/-0, Green

Spank Spoon Stems feature unique style, modern geometry, and rock-solid construction, without the heavy price tag suitable for all disciplines. … read more

your price $49.99 + ships free

BuyBuyPART NUM 260371
RaceFace Respond Stem - 45mm, 31.8 Clamp, +/-10, 1 1/8", Aluminum, Black
RaceFace Respond Stem - 45mm, 31.8 Clamp, +/-10, 1 1/8", Aluminum, Black

RaceFace Respond Stems Intended for All Mountain, Freeride or DH use Forged and Blasted 6061 aluminum for high strength and fatigue … read more

StarStarStarStarStar 4.7 of 5 ( 3 ) 4.7 of 5 stars average ( 3 reviews )
Currently Sold Out

11% offretail $47.99 your price $42.49

InfoInfo
Ritchey Trail Stem - 45 mm, 31.8 Clamp, +/-0, 1 1/8", Alloy, Black
Ritchey Trail Stem - 45 mm, 31.8 Clamp, +/-0, 1 1/8", Alloy, BlackRitchey

The Ritchey Trail Stem is the first Ritchey stem specifically designed for today's 5 to 6 inch travel trail bikes using wide bars. C220 with forward … read more

Currently Sold Out

your price $39.95 + ships free

InfoInfo
Dimension Trail Stem - 45mm, 31.8mm, +/- 6 Degree, Aluminum, Black  Dimension Trail Stem: 45mm, 31.8, +/-6 Deg, 1-1/8", Black
Dimension Trail Stem - 45mm, 31.8mm, +/- 6 Degree, Aluminum, Black Dimension Trail Stem: 45mm, 31.8, +/-6 Deg, 1-1/8", BlackDimension

For cross country and all-mountain riding, Dimension Trail Stems provide a broad array of sizing options--lengths from 35 to 120mm--rigorously tested … read more

Currently Sold Out

your price $35.00 + ships free

InfoInfo
Renthal Integra 35 Stem: Direct Mount, 35mm Clamp, 45mm Length, 0mm Rise, Black/Gold
Renthal Integra 35 Stem: Direct Mount, 35mm Clamp, 45mm Length, 0mm Rise, Black/Gold

This stem is designed to be used with dual crown forks and utilizes a C-shape clamp that provides a stiff and strong structure while allowing the stem … read more

Currently Sold Out

$20 offretail $109.95 your price $88.96 + ships free

InfoInfo
Dimension Trail Stem - 45mm, 31.8mm, +/- 6 Degree, Aluminum, Silver
Dimension Trail Stem - 45mm, 31.8mm, +/- 6 Degree, Aluminum, Silver Dimension

For cross country and all-mountain riding, Dimension Trail Stems provide a broad array of sizing options--lengths from 35 to 120mm--rigorously tested … read more

Currently Sold Out

your price $30.00 + ships free

InfoInfo
Renthal Integra 35 Stem - Direct Mount - Black/Gold
Renthal Integra 35 Stem - Direct Mount - Black/Gold

This stem is designed to be used with dual crown forks and utilizes a C-shape clamp that provides a stiff and strong structure while allowing the stem … read more

Currently Sold Out

$20 offretail $109.95 your price $88.96 + ships free

InfoInfo
Box Hex Lab Mini Stem, 45mm x 28.6mm x 1", Black
Box Hex Lab Mini Stem, 45mm x 28.6mm x 1", Black

Based on the Box One Trail Mountain Stem, Hex Lab Mini Stems are 3D cold forged from 6061-T6 aluminum alloy, giving them an incredible strength … read more

Currently Sold Out

your price $69.99 + ships free

InfoInfo
Origin8 Flux MTB Stem 1 1/8" x 31.8mm clamp  45mm 0 degree
Origin8 Flux MTB Stem 1 1/8" x 31.8mm clamp 45mm 0 degree

Full CNC machined AL6061-T6 alloy construction 35mm stack height 4 bolt front loading faceplate design ISO-Mountain safety certification … read more

Currently Sold Out

15% offretail $64.99 your price $55.25 + ships free

InfoInfo
Thomson X4 1.5" 45mm 0 Degrees 31.8 Black
Thomson X4 1.5" 45mm 0 Degrees 31.8 BlackThomson

Thomson X4 One Point Five Stems feature custom heat-treated bolts with corrosion-preventative plating. Machined 7000-series extruded bar … read more

Currently Sold Out

your price $114.95 + ships free

InfoInfo
Renthal Integra II Stem: Direct Mount, 31.8mm Clamp, 45mm Reach, 0mm Rise, Black/Gold
Renthal Integra II Stem: Direct Mount, 31.8mm Clamp, 45mm Reach, 0mm Rise, Black/Gold

Renthal Integra II Stem Item Specifications Color: Black/Gold Length: 45 Bar Clamp Diameter: 31.8 S.H.I.S. Stem Clamp Diameter: 28.6 … read more

Currently Sold Out

$11 offretail $109.95 your price $98.14 + ships free

InfoInfo
Ciari Monza T45 Top Load Stem Black
Ciari Monza T45 Top Load Stem Black

Monza stems are precision machined from 6000 series T6 aluminum. Includes shim for use with 1" and 1-1/8" steerer tubes Item Specifications … read more

Currently Sold Out

your price $55.00 + ships free

InfoInfo
Ritchey

"Ritchey bicycle components have been raced to victory in some of the biggest cycling competitions in the world including the UCI World Championships, the Tour de France and the Olympics and it all began in a simple garage in Menlo Park, California with Tom Ritchey.'

See all Ritchey

Dimension

Dimension makes quality components to repair or custom-fit the vast majority of bikes being ridden today, and provide the accessories that make them fun to ride.

See all Dimension

Thomson

Thomson is leading with innovative design for two primary markets - aerospace and cycling.

See all Thomson

Syntace

"Strong. Light. Smart."

See all Syntace

Answer

Answer BMX makes BMX racing components.

See all Answer

Full Speed Ahead

"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."

See all Full Speed Ahead

We define color as the main color of the item. It may have accents or highlights in other colors.

These models are available for online purchasing and can be shipped directly to you.

Bar clamp diameter is the diamater of the handlebar.

Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.

S.H.I.S clamp diameter is the steerer tube diameter.

Stem angles are measured perpendicular to the clamp. For example, a 90 degree stem is straight. Sometimes, this may also be refered to as a 0 degree stem. If two measurements are listed, the stem can be flipped for angling up or down.

Stem Type

This is the part number or identifier for this item from the manufacturer

Our Lowest Price - This product is ineligible for additional discounts or rebates.

Clearance items can save you big.

Buy this product and your entire order ships for free.

Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.