Naraku CVT KIT ECO (DIO, QMB)
Description: Naraku CVT KIT ECO(nomy) 139QMB aka Performance CVT transmission kit for GY6 50cc engines, has all major performance parts to tuned your CVT\transmission. Since Chinese-built scooters are not upgraded with top-end components out of the factory, this is the easiest way to overhaul the transmission without expert help. This negates any restrictions. Top speed and drivability on hills are improved, meaning reaching top-end speed with better acceleration! This Naraku Performance kit is made for the following engines 139QMB, Buddy50, RoughHouse, and many other GY6 50cc base engines!
Compatible with CVT unit on the market work on Honda Dio AF16 AF18E 50; Elite S/SE/SR 1994-2001, Daelim Cordi 50, Kymco Fever/ZX50, SYM DD50, GY6 40QMB 50cc 2-stroke, 139QMB 49cc-50cc 4-stroke, 50QMF 90cc-100cc, GY6 139QMB 49cc-50cc engines, Buddy50, Filly 50, Kymco, QLink, Peugeot, Piaggio, RoughHouse, SYM, TaoTao, and virtually any scooter engine with these measurements.
Belt Sold Separately use either belt length 669-18-30, 729-18-30, or 788-18-30. The 669mm length belt is for short case engines that use a 10" rear wheel. The 729mm length belt is for long case engines that use a 12" rear wheel. The 788mm length belt is for extra long case engines, like are found on the Maddog 50cc Ruckus clone. For Honda DIO require belt-size 654-18-30 (Part# BD44DIO-6541830). If installing on a Genuine Buddy 50 or RoughHouse 50 require belt-size 738-18-30 (sold separately).
NOTE: For the fuller CVT KIT see Naraku CVT KIT (Part# KIT.A.139QMB). Must re-use stock variator drive face, variator fan overlay, kickstart him, washers, rear pulley plate shaft, secondary slider, slider pins, slider seat funnel, clutch nut, and nuts. Recommend using a new belt with this kit. Belt and the belt drive-facing plates KEEP DRY. All, other areas apply moly-graphite grease when assembling. Example, lubricate slider grooves, slider pins, ball bearing seat, and inner funnel area with heat-resistant moly-graphite grease.
Installation: Make sure variator drive face is seated properly and not get its teeth chewed by the Bendix: 1. Slack the belt by opening the CVT clutch gives belt slack to the variator side. 2. Then install the variator drive face while lifting the slack belt further away from the center boss if done properly should not see any splines between variator drive face slop-side and boss flat-side. Should be flushed together. 3. Then install the existing variator fan, washer, and hand-tight nut. 4. Finally, apply blue Loctite, torque nut to 30-35ft-lbs. For reassurance please consult your manufacturer's variator torque specs.
100% Naraku Products – OPTIONAL ADD-ON (IN RED).
Includes the following Variator, Variator boss, Clutch, and Clutch bell.
1. Includes Naraku Variator 88mm Sport Black, Roller weights, Variator boss, Variator housing, Variator slides, and Variator top.
• 1x Alumin-Alloy Housing Black Coated ID: 20mm / OD: 88mm / H: 31.65mm
• 1x Stainless Steel Boss L: 38mm / ID: 14mm / OD: 19.9mm
• 1x Metal Top ID: 14mm / OD: 73.3 / H: 13mm
• 6x Roller Weights (black): 16x13 6gm
• 3x Plastic Slides (red)
2. Includes Naraku Clutch 107mm Performance Sport, Clutch housing, Clutch springs, and Clutch weights.
• 1x Clutch ID: 24.3<28mm / OD: 104.6mm / H: 30mm
• 3x Clutch Springs (red): 2000 RPM
• 3x Clutch Spring Weights
3. Include Naraku Clutch Bell, Clutch Bell PTFE Coated.
• 1x Iron Clutch Bell Vented ID: 108mm / OD: 119mm / H: 38mm
• Splines: 22 / ID: 11<12mm / OD: 20mm / H: 21.67mm
• Made in Taiwan
• Fit Starter: Bendix / Lock: Bracket
• Fit Clutch Nut: M28 / Socket: 39mm
• Fit Clutch Shaft Slider: 33.5mm / Pins: 6mm / Nut: M10 / Washer: M10 / Bearing Funnel: 43mm / Socket: 14mm
• Fit Variator Nut: M12 / Washer: M12 / Shims: 20mm / Socket: 17mm
• Fit Belt Size: 669, 729, 788-18-30 (Fit QMB ONLY)
• Fit Belt Size: 738-18-30 (Fit RoughHouse ONLY)
• Fit Belt Size: 654, 669-18-30 (Fit DIO ONLY)
• Fit Compression Spring: 1k, 1.5k, 2k rpm
• Fit Clutch Springs: 1k, 1.5k, 2k rpm
• Fit Dowel Pin Set (8x10mm)
• Fit DIO 49/50cc+
• Fit QMB 49/50cc+
Supported Models: Naraku CVT Kit (Part# KIT.A.139QMB); Honda Dio AF16 AF18E 50; Elite S/SE/SR 1994-2001, Daelim Cordi 50, Kymco Fever/ZX50, SYM DD50, GY6 40QMB 50cc 2-stroke, 139QMB 49cc-50cc engines, Baja SC50, Boreem (BMS) 50, Buddy50, Filly 50, Kymco 50, Panterra 50, Peugeot 50, Piaggio 50, Qingqi 50, QLink 50, Roketa 50, RoughHouse 50, SUNL 50, SYM 50, Tank 50, TaoTao 50, and virtually any other scooter engine with these measurements.
Item Weight & Package Dimensions:
• 3.22 pounds | 13.2" (L) x 12.2" (W) x 4.7" (H)
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- Stock: 34
- Reward Points: 6
- Part #: KIT.A.139QMB.L