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Shimano America Dura Ace RD-7900 Rear Derailleur

Item #SHI0150|15 in Stock – Ships Wicked Fast & Free

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Shimano America Dura Ace RD-7900 Rear Derailleur

Some rear derailleurs snort, snicker, and flat-out refuse to comply when you think about choosing a 50/34 crankset and a 12/27 cassette. Not the Shimano America Dura-Ace RD-7900 Rear Derailleur. The RD-7900 has an expanded chain-wrap capacity so you can use it with any combination of Dura-Ace cranks and cassettes (including a combo of 50/34 and 11/28). What else is rad about this piece? Shimano America made the pulley cage and P-body with carbon fiber so this derailleur weighs in at a modest 166g. And of course, the 7900 shifts with the smooth, consistent accuracy you expect from Shimano’s highest-level road-component family.

Bottom Line: Carbon and compelling chain-wrap capacity.

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Can this be used with a 50/34 and 11-34 rear cassette for touring?

Can this be used with a 50/34 and 11-34 rear cassette for touring? Thanks!

By: Seth
July 9, 2009

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No it can not. You will need what they call a long cage derailer, typically found in mountain bikes. This is a short cage derailer, you could run a 50/34 & 11-27, thats as good as is gets.

By: kevskoolkars
July 25, 2009

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Answer Seth's question >

can you use this type of derailleur on a bike with down tube

can you use this type of derailleur on a bike with down tube or bar mounted shifters.

By: jimzamp
March 23, 2009

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Yes, as long as you have a 10 speed indexed down tube shifter, or you can run ANY rear down tube shifter you have in the friction setting. 9 speed shifters may work too.

By: KC Gaudet
March 23, 2009

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Answer jimzamp's question >

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		<input type="hidden" name="question_id" value="${question_id}" />
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					Attach a different image to your answer.
					<span class="optional">(Optional)</span>
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                <p class="deleted_message" style="display:none">Photo deleted.</p>
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					Attach a different image to your review.
					<span class="optional">(Optional)</span>
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				<p class="deleted_message" style="display:none">Photo deleted.</p>
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					Did you find this helpful?
					${helpful_html}
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<br />${answer.date}</p>
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						Did you find this helpful?
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						<h3>Got an answer for ${user.display_name}?</h3>
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						<div class="textarea_container">
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{if display == 'normal'}
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				</a>
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					<p>
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<br /><span class="cpi_date">${display_date}</span>
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					<input type="hidden" name="content_id" value="${id}" />
					<input type="hidden" name="is_helpful" value="" />
					<p>
						Did you find this helpful?
						${helpful_html}
					</p>
				</form>
				<p class="image_options">
					{if flagged}
						<span class="flag_link" onclick="BCNTRY.wall.PDP.unflag_cpi_onclick(this, '${id}');"><a href="#" onclick="return false;" rel="nofollow">Un-Flag</a></span>
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			{if message}<div class="cpi_flagged confirmation">${message}</div>{/if}
			<div class="error_message"></div>
		</div> 
	 	<div class="cpi_right">
			<div class="the_comments">
				{if comment.comment_count > 0}
					<p class="cpi_options">
						<div class="comment_summary" id=${comment.comment_count}>
							  <h4 class="thread_info">
								  <a href="#" onclick="BCNTRY.wall.PDP.toggle_comments_onclick(this, 'cpi', '${id}');return false;" class="comments_toggler">${comment.comment_count} {if comment.comment_count == 1} Comment {else} Comments {/if}</a> 
								  Last Comment: <span class="cpi_date">${comment.latest_comment_submit_dt}</span>
								  by: <a class="user_profile_link"  href="${comment.profile_url}">${comment.latest_comment_user_display_name}</a>
							  </h4>
						 </div>
						 <div class="threaded_comments_cpi"></div>
					</p>
				{/if}
				<div class="error_message"></div>
				{if comment.solicit_comment_display == 'normal'}
					<div class="inline_solicitation">
					  <div class="comment_container">
							<form class="provide_comment_form" name="comment_cpi" method="POST" enctype="multipart/form-data" action="https://www.realcyclist.com/roadbike/content_upload/cpicomment/SHI0150/${id}" >
								<input type="hidden" name="content_id" value="${id}" />
								<input type="hidden" name="content_type" value="cpi" />
								<div class="error_message"></div>
								<div class="textarea_container"> 
									<textarea class="comment_content" name="comment_content" onkeyup="BCNTRY.wall.PDP.comment_content_onkeyup(this.form)" onfocus="BCNTRY.wall.PDP.comment_content_onfocus(this.form)">Write your comment here...</textarea>
									<input type="hidden" name="comment_content_default" value="Write your comment here..." /> 
								</div> 
								<input type="image" src="/images/roadbike/buttons/comment_it.gif" alt="Submit Comment"  class="answer_it_button" /> 
								<span class="comment_chars"></span>
							</form>
						</div> 
					</div>
				{elseif comment.solicit_comment_display == 'collapsed'}
					<div id="comment_solicit" class="comment_solicit">
						<p><a href="http://www.realcyclist.com/roadbike/content_upload/cpicomment/SHI0150/" rel="nofollow">Comment on ${user.display_name}'s photo ></a></p>
					</div>
				{/if}
		 	</div> 
		 	<div class="error_message"></div>
		</div> 
	{elseif display == 'flagged'}
		<div class="cpi_item">
			<div class="cpi_text">
				<p class="user_flagged_text">
					<span onclick="BCNTRY.wall.PDP.flag_cpi_show_onclick(this, '${id}')">
						<a href="#" onclick="return false;" rel="nofollow">${flagged_description}</a>
					</span>
				</p>
			</div>
			{if message}<div class="cpi_flagged confirmation">${message}</div>{/if}
		</div>
	{/if}

<div class="flag_container">
		<form class="flag_as_offensive" method="post" onsubmit="return false;" action="#">
			{if content_type == 'comment'}
				<input type="hidden" name="comment_id" value="${comment_id}"/>
			{else}
				{if content_type == 'answer'}
					<input type="hidden" name="question_id" value="${question_id}"/>
				{else}
					<input type="hidden" name="question_id" value="${content_id}"/>
				{/if}
				
				<input type="hidden" name="answer_id" value="${content_id}"/>
				<input type="hidden" name="cpi_id"    value="${content_id}"/>
				<input type="hidden" name="review_id" value="${content_id}"/>
			{/if}
			<span class="flag_close" onclick="BCNTRY.wall.PDP.close_dialog_onclick(this)"><a href="#" onclick="return false;" rel="nofollow"><img src="/images/roadbike/pdp/flag_close.gif" alt="Close the flagging form" class="flag_close"/></a></span>

<h4>Something rub you the wrong way?</h4>
			<p>Thanks for pointing it out. We'll send it immediately to our clean up crew. If you don't mind pointing us in the right direction...</p>
			<div class="error_message"></div>
			<p>
				This post was:
				<input type="text" name="flag_description" />
				(Optional)
			</p>
			<div class="clearb"></div>
			{if is_from_carousel}
				<input class="save_answer_button" onclick="BCNTRY.wall.PDP.flag_carousel_${content_type}_submit_onclick(this.form)" src="/images/roadbike/buttons/save_qa.gif" type="image" />
			{else}
				<input class="save_answer_button" onclick="BCNTRY.wall.PDP.flag_${content_type}_submit_onclick(this.form)" src="/images/roadbike/buttons/save_qa.gif" type="image" />
			{/if}
		</form>
	</div>

<div class="review" id="review_${review_id}">
		<div>
			{if image_url_small}
				<div class="content_image">
                    <a class="cpi_zoom" rel="nofollow" href="${image_url_large}" onclick="track_pdp_user_image_zoom();return hs.expand(this);">
						${image_el_small}
					</a>
					<span class="zoom_link" onclick="track_pdp_user_image_zoom();return BCNTRY.product_wall_image_zoom(this)"><a class="cpi_zoom" rel="nofollow" href="${image_url_large}" onclick="return false;">Zoom</a></span>
					</a>
				</div>
			{/if}
			${review_rank_img}
			<h3><a href="${review_link}">${title}</a></h3>
            <p>By: <a class="user_profile_link" href="${review_profile_link}"> ${review_display_name} </a>
                   <a class="user_profile_link" href="${review_profile_link}"><img class="minipro_icon" src="/images/roadbike/profile/minipro_icon.gif" alt="" /></a>
				   {if user.badges}
					   	{for badge in user.badges}
							${badge.image_el}
						{/for}
					{/if}
                <br/><span class="review_date">${review_date}</span></p>			
            <div class="review_text">
            <p>${review_comments}</p>
            </div>
            <form class="helpfulness_form">
                <input type="hidden" name="content_type" value="review" />
                <input type="hidden" name="content_id" value="${review_id}" />
                <input type="hidden" name="is_helpful" value="" />
                <p>
                    Did you find this helpful?
                    ${helpful_html}
                </p>
				<p class="review_options">
					<span class="flag_link" onclick="BCNTRY.wall.PDP.flag_review_onclick(this, '${review_id}')"><a href="#" onclick="return false;" rel="nofollow">Flag</a></span>
       	               <span class="improve_link" onclick="window.location='${editReviewURL}'">
              		       	<a href="#" onclick="return false;" rel="nofollow">Tweak This</a>
       	       	       </span>
     					<span class="edit_img_link" onclick="BCNTRY.wall.PDP.inactivate_review_submit_onclick(this, '${review_id}')">
				   		<a href="#" onclick="return false;" rel="nofollow">Delete Review</a>
					</span>
				</p>
				<div class="confirmation">Thanks for the review, ${review_display_name}.</div>
           </form>
		</div>
	</div>

{if display == 'normal'}
		<input type="hidden" id="review_${review_id}_title" value="${title}" />
		<input type="hidden" id="review_${review_id}_rank" value="${rank}" />
		<input type="hidden" id="review_${review_id}_body" value="${body}" />
		<input type="hidden" id="review_${review_id}_img_url" value="${image_url_small}" />
		${rank_image}
		<div class="review_item">
			{if image_url_small}
				<div class="content_image">
                    <a class="cpi_zoom" rel="nofollow" href="${image_url_large}" onclick="track_pdp_user_image_zoom();return hs.expand(this);">
						${image_el_small}
					</a>
					<span class="zoom_link" onclick="track_pdp_user_image_zoom();return BCNTRY.product_wall_image_zoom(this)"><a class="cpi_zoom" rel="nofollow" href="${image_url_large}" onclick="return false;">Zoom</a></span>
					</a>
				</div>
			{/if}
			<div class="content_right{if ! image_url_small} expanded{/if}">
				<h3><a href="${review_link}">${title}</a></h3>
				<p>By: <a class="user_profile_link" href="${user.profile_url}">${user.display_name}</a> 
					<a class="user_profile_link" href="${user.profile_url}"><img class="minipro_icon" src="/images/roadbike/profile/minipro_icon.gif" alt="" /></a>
					{if user.badges}
						{for badge in user.badges}
							${badge.image_el}
						{/for}
					{/if}
					<br /><span class="review_date">${date}</span>
				</p>
				<div class="review_text"><p>${body}</p></div>

<form class="helpfulness_form">
						<input type="hidden" name="content_type" value="review" />
						<input type="hidden" name="content_id" value="${review_id}" />
						<input type="hidden" name="is_helpful" value="" />
					<p>
						Did you find this helpful?
						${helpful_html}
					</p>
				</form>
				<p class="review_options">
					{if flagged}
						<span class="flag_link" onclick="BCNTRY.wall.PDP.unflag_review_onclick(this, '${review_id}')"><a href="#" onclick="return false;" rel="nofollow">Un-Flag</a></span>
					{else}
						<span class="flag_link" onclick="BCNTRY.wall.PDP.flag_review_onclick(this, '${review_id}')"><a href="#" onclick="return false;" rel="nofollow">Flag</a></span>
					{/if}

{if owned_by_current_user}
							<span class="improve_link" onclick="BCNTRY.wall.PDP.edit_review_onclick(this, ${review_id})">
								<a href="#" onclick="return false;" rel="nofollow">Tweak This</a>
							</span>
							<span class="edit_img_link" onclick="BCNTRY.wall.PDP.inactivate_review_submit_onclick(this, '${review_id}')">
							<a href="#" onclick="return false;" rel="nofollow">Delete Review</a>
						</span>
					{/if}
				</p>
			{if message}<div class="review_flagged confirmation">${message}</div>{/if}
			<div class="error_message"></div>
		</div>
		</div> 
		<div class="the_comments">
		{if comment.comment_count > 0}
			<div class="comment_summary" id=${comment.comment_count}>
				  <h4 class="thread_info">
					  <a href="#" onclick="BCNTRY.wall.PDP.toggle_comments_onclick(this, 'review', '${review_id}');return false;" class="comments_toggler">${comment.comment_count} {if comment.comment_count == 1} Comment {else} Comments {/if}</a> 
					  Last Comment: <span class="review_date">${comment.latest_comment_submit_dt}</span>  
					  by: <a class="user_profile_link"  href="${comment.profile_url}">${comment.latest_comment_user_display_name}</a>
				  </h4>
			 </div>
		{else}
			<div class="comment_summary" id=0></div>
		{/if}
			 <div class="threaded_comments_review"></div>
		{if comment.solicit_comment_display == 'normal'}
			<div class="inline_solicitation">
			  <div class="comment_container">
					<form class="provide_comment_form" name="comment_review" method="POST" enctype="multipart/form-data"  action="https://www.realcyclist.com/roadbike/content_upload/reviewcomment/SHI0150/${review_id}">
						<input type="hidden" name="content_id" value="${review_id}" />
						<input type="hidden" name="content_type" value="review" />
						<div class="error_message"></div>
						<div class="textarea_container"> 
							<textarea class="comment_content" name="comment_content" onkeyup="BCNTRY.wall.PDP.comment_content_onkeyup(this.form)" onfocus="BCNTRY.wall.PDP.comment_content_onfocus(this.form)">Write your comment here...</textarea>
							<input type="hidden" name="comment_content_default" value="Write your comment here..." /> 
						</div> 
						<input type="image" src="/images/roadbike/buttons/comment_it.gif" alt="Submit Comment" class="answer_it_button" /> 
						<span class="comment_chars"></span>
					</form>
				</div> 
			</div>
			<div class="clearb"></div>
		{elseif comment.solicit_comment_display == 'collapsed'}
			<div id="comment_solicit" class="comment_solicit">
				<p><a href="http://www.realcyclist.com/roadbike/content_upload/reviewcomment/SHI0150/" rel="nofollow">Comment on ${user.display_name}'s review ></a></p>
			</div>
		{/if}
		</div> 
	{elseif display == 'flagged'}
		<div class="review_item">
			<div class="review_text">
				<p class="user_flagged_text">
					<span onclick="BCNTRY.wall.PDP.view_flagged_review_onclick(this, '${review_id}')">
						<a href="#" onclick="return false;" rel="nofollow">${flagged_description}</a>
					</span>	
				</p>
			</div>
			{if message}<div class="review_flagged confirmation">${message}</div>{/if}
		</div>
	{/if}

{if display == 'normal'}
 		<div class="comment_info">
			<p>By: <a class="user_profile_link" href="${user.profile_url}">${user.display_name}</a> 
				<a class="user_profile_link" href="${user.profile_url}"><img class="minipro_icon" src="/images/roadbike/profile/minipro_icon.gif" alt="" /></a>
				{if user.badges}
					{for badge in user.badges}
						${badge.image_el}
					{/for}
				{/if}
				<br />
				<span class="comment_date">${date}</span>
			</p>
		</div>
		<div class="comment_content">
		<div class="comment_text"><p>${body}</p></div>
	
		<p class="comment_options">
			{if flagged}
				<span class="flag_link" onclick="BCNTRY.wall.PDP.unflag_comment_onclick(this,'${id}')"><a href="#" onclick="return false;" rel="nofollow">Un-Flag</a></span>
			{else}
				<span class="flag_link" onclick="BCNTRY.wall.PDP.flag_comment_onclick(this, '${id}')"><a href="#" onclick="return false;" rel="nofollow">Flag</a></span>
			{/if}
			<div class="error_message"></div>
		</p>
		
		<form class="helpfulness_form">
			<input type="hidden" name="content_type" value="comment" />
			<input type="hidden" name="content_id" value="${id}" />
		   	<input type="hidden" name="is_helpful" value="" />
			<p>
           		Did you find this helpful?
	           	${helpful_html}
    	  	</p>
		</form>

</div>
		{if message}<div class="comment_flagged confirmation">${message}</div>{/if}
	{elseif display == 'flagged'}
			<div class="comment_text">
				<p class="user_flagged_text">
					<span onclick="BCNTRY.wall.PDP.view_flagged_comment_onclick(this, '${id}')">
						<a href="#" onclick="return false;" rel="nofollow">${flagged_description}</a>
					</span>
				</p>
			</div>
			<div class="error_message"></div>
			{if message}<div class="comment_flagged confirmation">${message}</div>{/if}
	{/if}

Change me.

Tech Specs:

Material:: [Pulley cage & P-body] carbon
Speeds:: 10
Maximum Front Difference:: 16T
Total Capacity:: 33T
Weight:: 5.8oz (166g)
Recommended Use:: Road biking
Manufacturer Warranty:: 3 Years

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Shimano America Dura Ace RD-7900 Rear Derailleur

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Re-Useable Goat Skin Gift Wrapping

Shimano America Dura Ace RD-7900 Rear Derailleur

Product Wall

Can this be used with a 50/34 and 11-34 rear cassette for touring?

can you use this type of derailleur on a bike with down tube

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