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Fits the following chainsaws:


029, MS290, 034, MS340, MS341, 036, MS360, MS361, MS362, 038, MS380, MS381, 039, MS390, MS391, 041, 044, MS440, MS441, 045, MS450, MS451, 046, MS460, MS461, 048, 065, MS650, MS651, 064, MS640, MS641, 066, MS660, MS661, MS500i

Cannon bar code (starts) S1
GB bar code (starts) SN
Oregon bar code (ends) D025
Stihl bar code (starts) 3003
Sugihara bar code (starts) ST2

210FV4 Tsumura Pro Solid 25″[63cm] 3/8 .063 84 drive links [Revised ETA July 2022]


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Part Number 210FV4
Weight 1526g
Part Number 210FV4 Categories: ,
Cut speed

Tsumura chainsaw bars are manufactured and assembled using advanced technology machines and salt heat treatment to provide high standards of durability, strength, finish and accuracy. They incorporate uniform groove gauge tolerances for precise chain fit and improved cutting stability over the bar nose.

Guide bars require both of contrasting characteristics of toughness and hardness. Tsumura has adopted salt heat treatment that draws both of the contrasting characteristics. The salt bath heat treatment is the best way to achieve ideal steel which has toughness and hardness. Normally, Steel is heated over 800°C immediately, but the salt bath heat treatment provides a gradual steady heat method. Then, a good hardened steel structure, which is stable with less distortion, can be obtained.

There are two types of solid guide bar. One has a replaceable sprocket nose and the other has a hard nose. Solid guide bars are manufactured from one plate of super hard alloyed steel SKS-51.

Light Type bars have dove-tailed notches that are staggered and cut into the bar surface and packed with hard resin which reduces the weight of the guide bar by about 20%. This improves cutting efficiency and stability and also reduces user fatigue.

Additional information

Weight 1526 g

Customer Reviews

Based on 2 reviews
Exceptional Customer Service

The Tsumura bar was a poor fit on my Stihl, with the horizontal chain tension adjustment slot sitting proud of the clutch cover. On investigation, it was confirmed that the Tsumura was marginally smaller and different from the Stihl OEM, and in order to tension the chain correctly, this pushed the adjustment slot proud of the cover. I reported this issue on the Thursday morning to Chainsawbars, who agreed to replace with a Stihl bar. I posted the Tsumura back to them that afternoon, and received my replacement bar on the Saturday morning. That is customer service that cannot be bettered; exceptional!

Adam Woodgate

Keeps the chain in a straight line.
Cheaper than the Stihl and look fucking tasty.
Bit heavy will try the light version next time.

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