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120 Big Bore Pro Series Kit

This kit comes in two versions – 120-cubic inch and 124 cubic inch kit. The final motor size is determined by the existing stroke on your factory bike. These big bore kits have produced over 120 HP and 130 torque using the stock head on the 124 models when paired with a TMP cam shaft.

This 120ci kit will require the Screaming Eagle™ cylinder for boring to the larger 4.180 diameter. (Note: the price below reflects TMP providing that cylinder). If you already have the Screaming Eagle™ upgrade – the cylinder fee will be deducted from the price below. These kits feature our custom Wiseco pistons and the highest quality ring pack on the market. The cylinders are chamfered on the bottom for easy installation and the rings are filed to the proper gap before shipping. Head and base gaskets are supplied.

Note: No case modifications are required to acquire this increased motor displacement.

NC State Sales Tax will be applied.

$ 1,375.00
Please contact us to order.