- Harley Benton Parts JN07BK SPLK L6 Tuner Set; black locking staggered precision tuning keys; Schaller style button; basic location L6, 1 set of 6pcs; precision 19:1 gear ratio; bore diameter 10mm, sealed lubrication, sealed die-casting housings, each tuner comes complete with the washer, threaded hex bushing, and screw. Made by Jinho Korea. EUR 44.00 - See more - Buy online