Are they made out of silicon?

Yes a silicone foam, love these grips, best foam type grips out there.

Do these have locking end caps?

No. They just have end cap plugs.

Would these work on my Bontrager alloy, 31.8mm comfort sweep handle bars?

I have the ESI grips mounted on 31.8 carbon bars . They should fit on your bars, they are difficult to put on use a soapy water solution to help slide them on.

Is it easy to switch these grips from one handle to another?

Yes- I slip 4 long allen wrenches with rounded ends in between the grip and the handlebar and the grip slips off. To reinstall I use golf grip solvent.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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ESI Grips Extra Chunky - Silicone MTB Grips - Ultimate Comfort and Control for Mountain Bike and E-Bike Riders, Durable Silicone Bicycle Handlebar Grips for a Smooth Ride

Product ID: 4166901

Details

Brand
ESI Grips
Color
Black
Material
Silicone
Product Dimensions
5.13"L x
Vehicle Service Type
Bicycle

⚡Shock-absorbing, reduces fatigue

📏34mm diameter for max comfort

🛡️Durable silicone build

€ 49.62

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚵‍♂️ Grip the trail, ditch the fatigue — ride like a pro!

CUSTOM FIT CUSTOM RIDE - Cut-to-length feature lets you tailor grip size perfectly to your handlebar and style.
EFFORTLESS INSTALLATION - Slip-on design means no adhesives or clamps—get riding faster and hassle-free.
ULTIMATE COMFORT ZERO FATIGUE - Extra chunky 34mm diameter cushions your hands for all-day rides without wrist strain.
PRO LEVEL GRIP IN ANY CONDITION - Silicone material offers superior wet/dry grip, so you never lose control on the trail.
TRUSTED BY THE PROS LOVED BY ALL - Tested in diverse conditions and ranked #25 in Bike Grips—join thousands of riders upgrading their ride.

The ESI Grips Extra Chunky MTB Grips are premium silicone handlebar grips designed for mountain and e-bike riders seeking maximum comfort and control. Featuring a thick 34mm diameter for superior shock absorption and vibration dampening, these grips reduce hand fatigue on long rides. Their slip-on design requires no adhesives, making installation quick and easy. Trusted by professionals and highly rated by thousands, they deliver reliable grip in wet or dry conditions and can be customized in length to fit your style.

Specifications

ASIN	B00AOVWA8K
Best Sellers Rank	#16,057 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #33 in Bike Grips
Brand Name	ESI Grips
Color	Black
Compatible with Vehicle Type	Bicycle
Customer Reviews	4.6 4.6 out of 5 stars (3,301)
Global Trade Identification Number	00181517000544
Included Components	ESI Extra Chunky MTB Grip, Black
Item Dimensions L x W	5.13"L x 1.33"W
Item Type Name	Grips
Item Weight	0.27 g
League Name	ESI
Manufacturer	ESI Grips
Manufacturer Part Number	91-0495K
Material Type	Silicone
Model Number	XLCBK
Number of Items	1
Number of Packs	1
Size	130mm
UPC	181517000544
Unit Count	1 Count
Warranty Description	Limited Manufacturer

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