Ready to take your Harley-Davidson Milwaukee-Eight (M8) to the next level? Discover the Alpha Performance Engines (APE) Big Bore Kits at Taverner Motorsports—Brisbane’s trusted workshop for motorcycle engine upgrades and Australia-wide shipping. Whether you’re chasing more horsepower, torque, or a smoother, more exhilarating ride, our APE kits are engineered for riders who demand the best in Harley-Davidson M8 performance. If you want dyno tuning in Brisbane or reliable support anywhere in Australia, you’re in the right place.
Designed specifically for Harley-Davidson M8 engines, each APE kit is crafted for bolt-on simplicity, durability, and maximum power gains.
All kits are dyno tested for real-world performance, with horsepower and torque figures that speak for themselves.
Alpha Performance Engines is a recognised leader in Australian motorcycle performance; Taverner Motorsports brings years of expertise and friendly, professional service.
From quoting to installation, tuning, and after-sales service, our Brisbane workshop and nationwide team have you covered.
Crank up your M8’s attitude with the Power Plus Cam Kit, our most cost-effective way to unleash serious torque and throttle response. Pick your perfect grind from the 480, 483, 484, or 485 cams and feel the difference the moment you roll on. Paired with high-capacity lifters, billet cuff, adjustable pushrods, high-flow injectors and a 55mm intake, this kit delivers harder acceleration and smoother power.
The Stump Puller 128” kit is your entry to serious low-end grunt and all-day rideability. Perfect for upgrading 114” and 117” M8 engines, this package features robust APE cylinders, forged pistons, and the CR485 cam—delivering smooth torque and power that’s friendly on pump fuel. Loved by touring riders and daily commuters alike, it’s the ideal blend of durability and value.
For adrenaline seekers and those who want to push their Harley to the limit, the Silverback 128” package is unmatched. Producing a dyno-proven 160+ horsepower, this is the kit for serious performance enthusiasts. Engineered for strength and reliability, you can expect massive acceleration and a grin-inducing riding experience every time.
The Sneaky Pete is a favourite among Harley-Davidson owners chasing balanced power and reliability. Available in 124” and 128” configurations, this kit offers over 150 horsepower and torque-rich delivery, making every throttle input a thrill. Designed for ride-in/ride-out upgrades, APE’s engineering ensures dyno-tuned excellence, whether you’re cruising or carving through Brisbane’s hinterland roads.
Horsepower & Torque: The APE Sneaky Pete delivers 150 hp+, while the Silverback pushes 160+ hp. Expect substantial torque gains for stronger launches and effortless overtaking.
Enhanced throttle response and a power delivery that makes every ride more enjoyable, whether in the city or on the open highway.
All kits are engineered for everyday usability, balancing high performance with long-term durability and minimal maintenance.
Benefit from precision tuning for optimum results, ensuring your engine performs at its peak.
Our warehouse stocks over 11,000 parts from many different suppliers for a range of classic motorcycles, particularly for Harley Davidson and British motorbikes. Our parts department is on hand with great expertise to help you find just the right part for your ride.
Read More
Gave me a great deal on some nice grips and installed them for me, great customer service. will definitely be visiting whenever i need service for my harley
James Southam
QLD
I purchased my Talaria Sting electric bike from Brian. The team at Taverner Motorsports where helpful and ensured that my bike was ready for pick up. I would highly recommend!
Banos Porter
QLD
Great guys, honest, knowledgeable and do great work at more than reasonable rates. Thanks for the work on my CX
Damian Joyce
QLD
I visited the place when I was in Briabane and I was very well taken care of! I recommend!
Fabiano Sena
QLD
Could not recommend highly enough. Took on my 18 year old Buell. Expert mechanics with great attention to detail and the comms from Brian was second to none.
Leigh A
QLD
Couldn’t have been happier with the work i recently had done to my 2017 breakout . Expert advice and experts on the tools quick turnaround on Christmas week ! Thanks so much Joe and Cat 👍
feidhlim corr
QLD
I had an absolutely excellent experience, my bike came back in better condition than i dropped it off to them.. extremely happy with the customer service and workmanship.
Danny Meredith
QLD
Great people. Diverse bikes in the shop. You can tell they are not snobs and just real motorcycle people
Carlo A
QLD
I recently had my Harley Davidson Sportster serviced and was thoroughly impressed with the work performed by the them.
I am extremely satisfied and highly recommend their services to anyone seeking top-notch maintenance.
Abhi Singh
QLD
Definitely recommended easy to deal with Clear, responsive and understanding Of what I wanted and was stoked with the outcome Honestly, Joe and cat thanks heaps again
SKYHAWK SANDO
QLD
Awesome people who are extremely knowledgeable and experienced and very fair pricing.
Had my 883 serviced once before somewhere else, however after the Taverner service I realised how it was meant to run!
Magdalena
QLD
Ready to transform your Harley? From bolt-on Stage upgrades to A.P.E.’s and SnS big bore packages, Taverner Motorsports delivers power and precision.
159 Abbotsford Road, Bowen Hills, QLD 40061800 697 433enquiries@tavernermotorsports.com.au.png)
