IMO the term " woods pipe" only has relevance to certain machines that lacked low end grunt and good running 85-89 250R does not fall into the realm from my experience. On the quad that had a little more weight, with a stock engine, those did have some "woods pipes " available, but they signed off really fast on the top end...Mostly lower cc 2 stroke dirt bikes and the Banshee/Blaster were what that term was meant for, and most of those pipes focused on low end grunt with good mid torque, but signed off on top end. On the ATC250r most DG's were always reported as near stock in performance, but a slight upgrade, mostly just a weight saver that was very inexpensive. FMF fatty pipes are great for low to mid hit with "okay" over rev on stock and mild engines, but will choke out a built engine. However I owned one that had a wicked port job and I ran that FMF from trails to MX to drags and it performed everywhere, except at the top end where that engine could still pull, the fatty choked it back..
Woods setup, has a lot more going on than just a pipe. Typically, most woods riders prefer low end grunt combined with wicked mid range pull as top end does not really get used in tight woods and trails. For that the FMF fatty is a good pipe. Paul Turner Hi-revs and type 6 pipes are awesome, but a type 6 really can be snappy on a ported engine. Not a bad thing, but many riders may find the midrange hit very violent and abrupt. Personally I like that feeling..
For me, bumping up the compression slightly with a 89CR 250 head gasket, V force reeds, and FMF Fatty, PT or ESR, all are great pipes for woods and trails. The ESR was always a great pipe, and the older models were built like a tank, and did not dent as easy as most other brands..Some matching port work will make any of those pipes shine. Gearing can come into play as well, but I always found with 20 inch or smaller tires, 13/38 gearing was good all around. Taller tires may want you to drop to a 12/38 gearing to keep your low end torque feel with the bigger tires. Also a good pwk 38 mil carb will make a host of difference over a stock R carb, although the 86 PJ carb was not terrible.
Last edited by Mosh; 07-22-2019 at 12:29 PM.
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