Tucker

Twin Power Additions

4.25-inch M-8 Big Bore Cylinders

Generally accepted as the go-to for M-8 upgrades, 4.25" big bore cylinders have become established as the M-8 upgrade sweet spot.
These Twin Power 4.25 inchers are factory fitted for the popular Wiseco Black Edition pistons. When combined with Twin Power gaskets, a 107 cubic inch engine can be converted to 124 cubic inches, and a 114 cubic inch to 128 cubic inches.
Twin Power Brand Manager James Simonelli says: "This is strictly a bolt-on kit, as the special gaskets eliminate the need to weld or otherwise modify oil or water passages. Machining of the crankcase is also not required. Gasket kits are available with either .030" or .040" thick head gaskets based on the builder's preference."
The cylinders are offered in a factory style black textured powder-coat finish with highlighted fins. Cast-in iron liners ensure strength, durability and quiet operation. Cylinders are sold in pairs and include cylinder head dowels.
"The M-8 has shown incredible performance potential, and this kit really wakes up a stocker," says James. "On a 107" dresser with no headwork, TTS 250 cam and valve springs, 62 mm throttle body, a performance intake and 2:1 exhaust, we achieved 139.63 hp and a whopping 142.65 ft. lbs. of torque with a tabletop flat torque curve."

Crankshaft Position Sensor

 
Twin Power offers a crankshaft position sensor with exact OEM fit, form and function. Endurance tested to 60,000 miles to ensure sensor longevity; OEM-style connector.

O2 Sensor

"Twin Power oxygen sensors are precision-made for outstanding performance. They feature extra-high temperature dual-shield ends and are direct fit. No modifications are needed. Made in the USA, they meet OEM specifications.

Cam Change Gasket Kits

Kits include all gaskets, seals and O-rings necessary for a camshaft change.

34T Compensator Eliminators 

Twin Power 34T compensator eliminators eliminate slipping, reduce noise and improve starting and starter life and reduce spinning weight by 4.8 lbs. Machined from 4140 tool steel and heat-treated, they do not require alternator rotor replacement. Available for a wide range of M-8 Touring/Softail and Twin Cam Big Twins as appropriate.

TUCKER V-TWIN
www.tucker.com/v-twin
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