5x10x4mm Metal Shielded "Speed" Bearing (10) by ProTek RC

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This is a pack of ten 5x10x4mm metal shielded "Speed" 1/8 clutch bearings. ProTek R/C "Speed" bearings are high quality steel/chrome bearings designed for the R/C racing enthusiast.

These 5x10x4mm metal shielded bearings are the standard bearing for the 1/8th scale nitro clutches. Please check the manual that came with your vehicle for the correct size if you are not certain.

These are also used as wheel bearings in the Kyosho Lazer ZX-5 1/10th scale 4WD electric buggy.

ProTek R/C is an AMain Sports & Hobbies brand.

This product was added to our catalog on March 27, 2006.

Merdith Roach
Friday, Aug 9 2013 (about 4 years ago)
ProTek RC 5x10x4mm Metal Shielded "Speed" Bearing (10)
I agree these are the best $1.00 clutch bearings I've tried by far. The metal shield stays in place unlike most rubber sealed bearings and stay smooth and free over time. I can take these out and clean them with some denatured alcohol and blow them out and re-oil them and keep on using them. I was tired of constantly loosing shields with other brands and throwing them away.)
Francisco Alberto Mijangos Topete
Verified Owner
Thursday, Aug 10 2017 (10 months ago)
ProTek RC 5x10x4mm Metal Shielded "Speed" Bearing (10)
It holds the more powerful engine in the
harder environment!

Use it for bashing, practicing or even for
that long Amain race, really good quality
and a very low price tag, can't go wrong
with this bearings)
Scott DeMoor
Verified Owner
Monday, Jan 23 2017 (about a year ago)
ProTek RC 5x10x4mm Metal Shielded "Speed" Bearing (10)
The best clutch bearings I have used thus far. They last way longer than any other brand that I have tried. I gave these a try last season after reading the reviews, and I was not disappointed.)
Red Long
Verified Owner
Tuesday, Jan 27 2015 (about 3 years ago)
ProTek RC 5x10x4mm Metal Shielded "Speed" Bearing (10)
Great bearing for the price seem to hold up just as long as the pricey ones ive bought before)
Brett Blum
Verified Owner
Sunday, Apr 13 2014 (about 4 years ago)
ProTek RC 5x10x4mm Metal Shielded "Speed" Bearing (10)
Great bearings! They hold together much better than a rubber sealed bearings. I have been running these in my clutch and they have held up for off-road so far. Another good protek product.)
Anthony Misasi
Verified Owner
Wednesday, May 20 2009 (about 9 years ago)
ProTek RC 5x10x4mm Metal Shielded "Speed" Bearing (10)
Excellent bearings. after a quart of fuel used my CB will free spend for over a min. Thats how smooth these bearings are.)