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Nope - longer arms are the fronts - that angles the vertical link backwards to give the 3 degrees of castor. And Dave you will need TR4 trunnions with the castor built in to finish this. </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Triumphs <triumphs-bounces@autox.team.net> on behalf of Cliff Hansen <cliff_hansen@outlook.com><br>
<b>Sent:</b> Sunday, May 17, 2026 8:06 PM<br>
<b>To:</b> dave northrup <dave@ranteer.com>; list Triumph <triumphs@autox.team.net><br>
<b>Subject:</b> Re: [TR] 4A upper A arms</font>
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The longer arms are the rears.</div>
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I think the letters are on the shorter (front) arms.</div>
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The letter faces up. L up on the left side, R up on the right side.</div>
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Cliff</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Triumphs <triumphs-bounces@autox.team.net> on behalf of dave northrup <dave@ranteer.com><br>
<b>Sent:</b> Sunday, May 17, 2026 4:27 PM<br>
<b>To:</b> list Triumph <triumphs@autox.team.net><br>
<b>Subject:</b> [TR] 4A upper A arms</font>
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<div dir="auto">I am converting my 3A to 4A front suspension using 4A upper A arms. I bought them from a breaker, and as i clean them up i notice that 2 of the 4 arms have L on one side and R on the other. Yes, left and right, but beyond that I don't understand.
And the other 2 A arms have no marking
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<div dir="auto">How do i install these A arms?</div>
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