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.
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Showing 64 products:
Bike Yoke Barkeeper Stem (35.0mm), 45mm - Black 
BuyPART NUM 205629
A one-piece design allows for an incredible high strenght-to-weigth ration, but it does cost some compatibility. Not every handlebar will be compatible … read more
Ships Freeyour price $89.00 + ships free
BuyPART NUM 205629 
Dimension Trail Stem - 45mm, 31.8mm, +/- 6 Degree, Aluminum, Black Dimension Trail Stem: 45mm, 31.8, +/-6 Deg, 1-1/8", Black
BuyPART NUM 551340
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
your price $36.99 + ships free
BuyPART NUM 551340 
Ritchey Trail Stem - 45 mm, 31.8 Clamp, +/-0, 1 1/8", Alloy, Black
BuyPART NUM 303891
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
your price $49.95 + ships free
BuyPART NUM 303891 
Renthal Integra 35 Stem - Direct Mount - Black/Gold BuyPART NUM 374012
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
your price $120.95 + ships free
BuyPART NUM 374012 
Origin8 Flow 3D MTB Stem, 45x31.8x28.6 0d, Black BuyPART NUM 200739
3D forged AL6061-T6 alloy construction 40mm stack height 4 bolt front loading faceplate design ISO-Mountain safety certification … read more
15% offretail $51.99 your price $44.19 + ships free
BuyPART NUM 200739 
Kalloy Uno Advanced Project Stem, 31.8 x 0d x 45mm Black BuyPART NUM 775099
Lightweight 3D forged 6061-T6 aluminum 4-bolt faceplate Opposing 2-bolt steerer clamp stack height = 40mm 125g (45mm) … read more
your price $16.99
BuyPART NUM 775099 
FSA Gradient Stem, 31.8 x 45mm, 1-1/8", Black
BuyPART NUM 647506
BTI Part Number: FS-4320 Vendor Part Number: 170-0009002050 Steerer Diameter: 1-1/8: Bar Diameter: 31.8 Rise: … read more
your price $74.00 + ships free
BuyPART NUM 647506 
Promax Impact Mini 45mm Top Load Stem 1" Blue BuyPART NUM 403864
Item Specifications Color: Blue Reach: 45 Stem Type: Top Load … read more
your price $42.00 + ships free
BuyPART NUM 403864 
Spank Spoon 350 Stem, 35 x 45mm, Black BuyPART NUM 563710
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 $59.99 + ships free
BuyPART NUM 563710 
Origin8 Flux MTB Stem 1 1/8" x 31.8mm clamp 45mm 0 degree BuyPART NUM 297238
Full CNC machined AL6061-T6 alloy construction 35mm stack height 4 bolt front loading faceplate design ISO-Mountain safety certification … read more
15% offretail $99.99 your price $84.99 + ships free
BuyPART NUM 297238 
Kalloy Uno M35 Stem, 35.0 x 0d x 45mm, Black BuyPART NUM 296644
Lightweight 3D forged 6061-T6 aluminum 4-bolt faceplate Opposing 2-bolt steerer clamp stack height = 40mm Item Specifications … read more
your price $17.99
BuyPART NUM 296644 
Ritchey WCS Trail Stem: 45mm, +/- 0, 31.8, 1-1/8, Blatte BuyPART NUM 383693
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 $99.95 + ships free
BuyPART NUM 383693 
Box Hex Lab Mini Stem, 45mm x 28.6mm x 1", Black BuyPART NUM 971293
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
your price $69.99 + ships free
BuyPART NUM 971293 
Bike Yoke Barkeeper Stem (35.0mm), 45mm - Raw Forged Finish BuyPART NUM 526048
One-piece design for incredible high strength-to-weight ratio, at the expense of some compatibility: not every handlebar will be compatible to … read more
your price $89.00 + ships free
BuyPART NUM 526048 
Chromag RIZA Stem, (31.8) 90d X 45mm - Red BuyPART NUM 262128
CNC machined in Whistler, Canada from premium 6061 billet aluminum Features a new faded edge on the clamp face to help avoid hot spots and … read more
$13 offretail $135.00 your price $121.50 + ships free
BuyPART NUM 262128 
Burgtec MK3 Direct Mount Stem, (35) 45mm, Toxic Barbie Pink BuyPART NUM 810622
CNC machined aluminum direct mount stem used by top World Cup pros Stainless steel hardware Fits BoXXers, Fox 40, DVO, Manitou, Marzocchi … read more
your price $145.19 + ships free
BuyPART NUM 810622 
Burgtec MK3 Direct Mount Stem, (35) 45mm, Burgtec Bullion Gold BuyPART NUM 230482
CNC machined aluminum direct mount stem used by top World Cup pros Stainless steel hardware Fits BoXXers, Fox 40, DVO, Manitou, Marzocchi … read more
your price $145.19 + ships free
BuyPART NUM 230482 
EVO, Caliber, Stem, Diameter: 31.8mm, Length: 45mm, Steerer: 28.6mm, 0 degree, Black BuyPART NUM 721298
3D forged alloy construction Fits 1-1/8 (28.6mm) steerer forks Fits 31.8mm handlebar clamp Heat treated hardware Item … read more
your price $39.99 + ships free
BuyPART NUM 721298 
Chromag Riza Stem, 45 x 28.6, 90 Degree, Silver BuyPART NUM 307014
M6 bolts Wide clamping area spreads load over large area 1 piece faceplate CNC machined in Whistler, Canada Faded edges … read more
$13 offretail $138.00 your price $124.20 + ships free
BuyPART NUM 307014 
Chromag Riza Stem, 45 x 28.6, 90 Degree, Red BuyPART NUM 915620
M6 bolts Wide clamping area spreads load over large area 1 piece faceplate CNC machined in Whistler, Canada Faded edges … read more
$13 offretail $138.00 your price $124.20 + ships free
BuyPART NUM 915620 
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.
"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.'
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
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
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