Renthal Apex Stem 31.8mm Dia


Renthal Apex 31.8mm Stem

Available in 31mm, 40mm, 50mm, 60mm

We stock a variety of the most popular stem options.

Renthal cockpit special orders typically drop ship within three days of order.

Some colors and models are special orders.
If you have questions on Delivery ETA please chat, email or call for details!

Inventory Updated 9/24/21

SKU: N/A Categories: , Tags: , ,


Renthal Apex 31.8mm Stem

Combining All Mountain strength, Enduro stiffness and XC weight savings, this stem is ideal for any type of riding style. The unique 240 degree, two-piece clamp area allows much of the stem material to be removed without sacrificing strength and is offered in a variety of sizes for rider preferences and set ups.

CNC machined from a solid billet of 7075 aluminum
240 degree clamps create a secure wrap around the handlebar
Stem can be run with either a /-6 degree angle
Oversized center bore increases stiffness and strength
Extensive external 3D machining increases torsional stiffness, yet reduced weight
Durable anodizing and laser graphics

Renthal Apex Stem Installation Instructions

Renthal Apex Stem Installation How-To


Remove 240 degree clamps.
Place over bar, at smaller diameter.
Slide to center of bar.
Zero Gap on bottom of clamp.
Torque top of clamp.

Ensure you check torque!

Bar Clamp Diameter (mm): 31.8 mm

Color: Black/Gold

Defined Color: Black

Material: Aluminum

Length: 31 mm, 40 mm, 50 mm,  60 mm

Stem Angle (deg):  6 deg , -6 deg

S.H.I.S. Stem Clamp Diameter: 28.6

Stack Height: 40

Weight: 114 g

Renthal Part Numbers: STM112-BKAG, STM101-BKAG, STM102-BKAG, STM103-BKAG


Special Order Products: Shipping times may vary. These products may not be on our premises however we order almost daily from these vendors! Our team will be in touch with ETA on your order. Questions? Feel free to ask before, during or after your purchase.

Contact Me Regarding This Product

  • Please contact me by:

  • Question on availability? Spec? Compatibility?
    Our team will be in contact within 24 hours!

  • Hidden
  • Hidden
  • Hidden
  • This field is for validation purposes and should be left unchanged.

Additional information

Complete Wheel Size
Ride Concepts Sizing
Complete Wheel Size Yeti
Handlebar Brand
Seating Brands
Tires 27.5 Model
Frame Wheel Size Ibis
Grips Brand
Frame Brand
Rear Shock: Stan/Trun
Rear Shock: Met Stroke
Handlebar Dia
In Stock Tools

31, 40, 50, 60

Brakes1 Brand
Rotors Brand
Helmet Brand
Fork Wheel Size
Complete Wheel Size Ibis
Seatpost Remotes Brand
Yeti Complete Model
Chain Guide Style
Chain Ring Shape
Chain Rings Brand
Chain Rings Mounting
Clipless Brands
Chain Brands
Fork Travel
Headset Brand
Headset Type
Cranks Brand
Handlebar Width
Flats Brand
Fork Brand
Fork Offset
Riding Gear Categories
Saddles Brands
Ibis Complete Model
Brakes Brand
Trail Tool Type
Tires 27.5 Brand
Bottom Bracket Style
Rear Shock: Imp Eye
Brakes 1 Style
Shop by Brand


BK Maint Brand
Pedal Accs Brand
Tires 29 Sidewall
Pedals Brand
Rear Derail Brand
Rear Shock: Imp Stroke
Rear Shock Brand
Frame Wheel Size
Cassette Brand
Hydration Style
Tires 29 Size
Tires 29 Model
Seatpost Travel
Helmet Style
Frame Wheel Size Yeti
BK Maint Type
Rear Shock: Met Eye
Seating Type
Seatpost Brands
Tires 29 Brand
Seatpost Diameter
Shifter Brand
Shop Tool Type
Rotors Size
Body Armor Style
Bottom Bracket Dia
Tires 27.5 Sidewall
Tires 27.5 Size
Cockpit Brands


Cockpit Component


Stems Brand


Stems Dia