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A special cutter geometry provides excellent control characteristics and very good chip flow, which help enhance cutting efficiency.

Product Description

STIHL RAPID™ Super Klassic is an extremely fast-cutting chain. The “Klassic” designation includes special cutter geometry which provides excellent control characteristics and very good chip flow, enhancing overall cutting efficiency. Its cutter and tie strap design reduces vibration levels significantly while still utilizing the aggressive full-chisel design. The razor-edged, square-cornered cutter shape ensures minimum chain friction for an exceptionally smooth and clean cut in hard or frozen wood. It offers excellent cutting and plunge-cutting efficiency. RSK chain typically cuts faster than RM chain, but requires careful sharpening and maintenance to continue to perform well.

Applications: Ideal for use in the forestry industry for felling, bucking and limbing on medium to high-powered chainsaws. These aggressive cutting chains are designed for trained professional cutters with extraordinary cutting needs.

STIHL recommends using low-kickback, green-labeled chain and green-labeled reduced-kickback bars on all powerheads.

Unsure which type of saw chain you need? Download our Saw Chain Selection & Identification Chart for easy reference when replacing your STIHL saw chain.


3/8" Pitch - Part #3874

Important Information

This symbol indicates that the product has increased risk of kickback injury and is for use only by persons with extraordinary cutting needs and experience and specialized training for dealing with kickback.

This symbol indicates that the chain is a low kickback chain. STIHL recommends the use of a green-lableled low-kickback chain.


WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.


OILOMATIC® STIHL RAPID™ Super Klassic (RSK) is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from RSK on my MS661 R C-M saw - Wooded 3.7 acre lot Awesome chain, not cheap - but you get what you pay for it seems. I’m running the RSK on a 25” ES Light bar hanging in an MS661 R C-M powerhead. The chain is a bit grabby so care and attention must be given to this one. HOWEVER it will perform!!! Soft wood is effortless and “Wow” fast!!
Date published: 2017-12-18
Rated 5 out of 5 by from best chain i have used I have been cutting wood for over 15 years and this is by far the best chain I have used. I have run this side by side with the RS3 and it would buck four cuts to the rm3's one. No pressure needed, you just let the saw do all of the work. best of all it saves the back during those big cuts that take low kick back chain forever to cut through. Now on that note this is not a chain you can take for granted it will kick back, and if you don't pay close attention it will bite. As to sharpness I have run 2 cords of red oak and I haven't even seen it break a sweat. It is very durable but I cut clean wood and haven't had it in the dirt.
Date published: 2016-01-24
Rated 5 out of 5 by from Proverbial Hot Knife Through Butter Amazingly fast cutting speed. Wider kerf helps a lot when cutting fallen trees up. More room for the log to move before it pinches.
Date published: 2015-05-01
Rated 5 out of 5 by from Excellent Chip Removal I prefer this chain over RS because of better chip removal on deep cuts. Also seems to plunge better.
Date published: 2015-01-24
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Saw Chain Selection & Identification Chart (PDF)
Saw Chain Wear Guide (PDF)
STIHL Limited Warranty
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