Red Line V-Twin Transmission Oil with ShockProof

10% off MSRP


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Red Line V-Twin Transmission Oil with ShockProof


  • This product dampens transmission noise (reducing the notorious shifting clunk found in these gearboxes), dramatically reduces temperature, provides thicker oil films between gear teeth and resists throw-off
  • For all aftermarket versions like Baker, JIMS, S&S, etc.
  • For all H-D trans including with Evolution engines, Twin Cam engines, and latest 6-speed Cruise Drive
  • Same fluid as our unique Heavy ShockProof Gear Oil
  • Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90
4.9 / 5.0
20 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Stuff!
Great stuff. If you had this stuff in your tranny and it drained out accidentally, you would still get home. Really coats the gears and make shifts smooth. Pink color would let you see it was a transmission leak instead of an oil leak if you had a tranny gasket leak problem. It ain't cheap, but quality stuff isn't. You could probably go 10 K between fluid changes instead of the normal 5 with this stuff. Only downside is that switching from RedLine to another transmission fluid would be messy - it would take a couple of changes before you got all the pink stuff out.

PROS: Really Sticky, Pink

CONS: Difficult to switch from

February 19, 2010
I would buy this product again and again
I was very happy with and arrive in good condition!!! Thanks again

PROS: I could't get any beter

CONS: Highly recomended

October 27, 2010
so far so good
I have a noisey rev tech 6 speed trany in my harley,and it helped quiet it down,I think its getting quieter everytime I run it,thanks for the oil and the quick dilivery,Beau.
January 20, 2013
Great product.
I have 48,000 miles on my 2005 HD Electra Glide and just started using Red Line transmission fluid in it. I noticed smoother shifting right away and now it is easy to shift into neutral when I'm at a dead stop. Great stuff!!!
November 6, 2012
HD Xmsn Oil
Only a couple hundred miles on the change on my 2002 Lowrider, but xmsn seems to be smoother and Neutral easy to find.
February 13, 2013
Outstanding product! As advertised!
Had difficulties finding Neutral on my motorcycle. The Redline Synthetic transmission oil with Shockproof mad a tremendous difference toward resolving this issue. For the price, it is worth the few dollar difference over the Harley-branded products.

PROS: Easier shifting, Easy Neutral Finding, Quieter Shifting

CONS: Used Oil Smells Horrible

August 20, 2013
Eliminate Klunk Issue
Highly recommended, tried and unbelievable how much better my Harley Shift's.
August 20, 2013
Good product I would buy again.
Perfect for Harley's
November 13, 2013
The best oil for a V-Twin transmission
It works great
January 13, 2014
2014 FLHXS
Changed to Red Line @ 1000 miles. Big improvement in shifting & finding neutral. Reduced transmission whine considerably.
March 23, 2014
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Product Style Item # Manufacturer Product # Availability
Red Line V-Twin Transmission Oil with ShockProof 952560 531183 In Stock: Ships next business day