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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Extra Chunky MTB Grip

Product ID: 339175281

Details

Vehicle service type
Bicycle
Colour
Black
Brand
ESI Grips
Material
Silicone
Product dimensions
13L x 3.4W

⚡max shock absorption

⚖️lightweight 80g design

🛡️34mm ultra-thick diameter

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NZ$79

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚵‍♂️ Grip the trail, ditch the shake!

SLEEK BLACK STYLE - Minimalist black finish complements any MTB setup with professional flair
LIGHTWEIGHT YET DURABLE - Only 80g per grip, crafted from premium silicone for lasting performance
STAY IN CONTROL ALWAYS - Enhanced shock absorption reduces hand fatigue on long rides
PERFECT FIT FOR EVERY BAR - 5-1/8" length grips with included bar end caps for secure installation
RIDE WITH UNMATCHED COMFORT - Extra chunky 34mm diameter cushions every trail impact

The ESI Grips Extra Chunky MTB Grip offers a thicker 34mm diameter silicone design that maximizes shock absorption for superior comfort on rugged trails. Measuring 5-1/8" in length and weighing just 80g, it includes bar end caps for a secure fit, making it the ideal upgrade for serious mountain bikers seeking durability and control.

Specifications

Color	Black
Size	One Size
Style	Extra Chunky
League	ESI
Height	1.5 inches
Length	8.6 inches
Weight	0.25 Pounds
Width	5.5 inches
Material Type	Silicone
Number of Items	1
Outer Material	aluminum
Sport	biking
Included Components	ESI Extra Chunky MTB Grip, Black
Batteries Included?	No
Brand	ESI Grips
Department	unisex-adult
Manufacturer	ESI Grips
Item model number	XLCBK
Product Dimensions	22.86 x 10.16 x 5.08 cm; 80 g
ASIN	B00AOVWA8K

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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NZ$79

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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