This topic of increasing the rev limiter range has come up mant times. Using the attached link, and if I am looking at it correctly, it appears that unless significant (translated $$$$$) modifications are made, the torque and HP begin to drop prior to max RPM. That said, what are the benefits to spooling up the engine to a point above where the meat resides?

http://www.bonnevilleperformance.com/BAMM%20DYNO%20CHART.htm

Also, saw this one on ebay.
http://cgi.ebay.ca/Triumph-Speedmaster-2...6QQcmdZViewItem

Note the description;

Vehicle Description
2003 Triumph Speedmaster
This Triumph has been a garage queen of mine for two years. It is a mechanically sound and well maintained machine with many aftermarket goodies. The bike has 2332 miles total, has never been down, and is flawless from tip to tale. Regular and seasonal maintenance has always been performed. I am the original owner of this bike.
It is a lot of fun to be on and rides easily only weighing somewhere in the 550 range. The bike was dyno tuned after all the mods and put 69 horsepower to the rear wheel. I don't ride it much and have decided to put it up for sale in the anticipation of a new ducati. Pictures don't do the bike justice, it is a fine example of a modern british cruiser.
I've around $16,000 total in this Triumph, reserve is less than half that. The following parts came from www.bonnevilleperformance, www.performancemachine.com, www.barnettclutches.com, or my garage.
790 cc. engine: Stock 38mm carbs were replaced with a stage 2 kit from bonneville performance...Custom Carb setup: Twin mikuni 42mm carbs with custom intake manifolds,K & N air filters, air injection eliminated, and Sceptre shorty pipes. Oil cooler switched from radiator style to dual turbulated coolers. DYNO TUNED AT KINETIC PLAYGROUND IN TULSA RESULTING IN 69 RWHP, AROUND 79 AT THE CRANK ALL AT 5800 RPM (ADVERTISED STOCK CRANK POWER WAS SOMETHING LIKE 54 AT THE CRANK). The engine runs strong and breaths well; it is just now broken in.
Joker bar risers, performance machine controls (wired internally through the bars), Barnett clutch and throttle cables, powder coated triple tree, fork lowered 3/4-inch, custom front blinker bracket, Kurakyn led turn signals front and back, Cowhide seat. Custom paint -Sherwin Williams Alkylyd Enamel black with an offset cream white stripe, hand rubbed by yours truly (I used to finish cars for a living)
The bike is in Tulsa, Oklahoma and can be inspected prior to bidding/ purchase. I would prefer a local pickup but will assist in shipping at your expense. Upon auction completion I require $1500 security deposit within 72 hours; the balance to be paid at the time of pickup no later than 10 days total after the auction has ended. I also have all parts removed from the bike since stock up for grabs and will include for 500 beyond the closing price.