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OPTIONAL SETUP OPTIONS - DIRT TRACK OR SAND Out of the box, the Nitro Rail is a good starting platform for racing, and when setup with a smaller clutch bell and sand paddle tyres, is a blast to drive in the sand. In addition to the options suggested in the Chassis Tuning Guide on pages 17 ~ 22, we recommend the...
In that XTM Racing has no control over the final assembly or material used for final assembly, no liability shall be assumed for any damage resulting from the use by the user of the final user-assembled product. By the act of using the final user-assembled product, the user accepts all resulting liability.
KIT CONTENTS After opening your Nitro Rail Off-Road Buggy, remove all of the parts from the box and double-check that you have all of the items listed below. If you find a part is missing or damaged, please contact your regional distributor, using the Customer Service Information on page 3.
Alkaline batteries. n Miscellaneous Tools and Other Items In addition to the products listed previously, the following tools and other items are recommended to run and maintain your Nitro Rail Off-Road Buggy.
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Engine: The Nitro Rail features a powerful .28 size two-stroke nitro engine with pull-starter for ease of use and great performance. Fuel Tank: The fuel tank holds the fuel that the engine uses. The fuel tank includes a fuel pressure nipple that connects to the tuned pipe to pressurise the fuel system and also features a quick-flip type lid for fast refueling.
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4mm 6061 aluminium for strength. Steering Servo: Controls the Nitro Rail's steering. A 'servo saver' is used to help prevent the servo gears from being stripped out. Steering Tie-Rod: The steering tie-rod connects the steering linkage and the castor block. The tie-rods are adjustable so you can make toe-angle adjustments to the front wheels.
When you pinch the fuel line to stop the engine, you must pinch it hard and hold it. The engine will rev up quickly, then stop. We suggest holding the Nitro Rail while doing this, so that it doesn't lurch out of your hands. Take care to avoid moving and/or hot parts.
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When in the 'ON' position, the On/Off switch should be pushed backward. q Rotate the transmitter's steering wheel forward (to the right). The Nitro Rail's front wheels should turn right. IMPORTANT: If the wheels don't turn right, use the transmitter's steering channel servo reversing function to change the direction that the front wheels turn.
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[open about 1mm (1/16")] and the brake linkage should move forward and engage the brakes (i.e., the Nitro Rail will not be able to roll at all when pushed). q Let go of the throttle trigger and the brakes should disengage.
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Air Filter Upgrade Tip if Driving Your Nitro Rail in Sand If you'll be driving your Nitro Rail Off-Road Buggy in sand or in extremely dusty conditions, we suggest using a prefilter sleeve over the air filter to improve the air filter's performance. Wet the main air filter element, then slide the prefilter sleeve over the air filter.
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WITh ThE xTm RACING .28 NITRO ENGINE High Speed n Carburettor Familiarisation Needle Valve Low Speed Needle Valve Refer to the photo at left to familiarise yourself with your engine's carburettor. All of the carburettor settings come preset from the factory for initial starting and break-in, but you should have a small flat blade screwdriver handy to make adjustments to the carburettor during the break-in process.
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PRO TIP: We recommend that you place the chassis on a dedicated car stand or similar so that all four wheels are suspended off the ground. This will ensure that your Nitro Rail does not accidentally drive away when starting the engine if the idle setting is too high.
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IMPORTANT: When you pinch the fuel pick-up tube to stop the engine, you must pinch it hard and hold it. The engine will rev up quickly, then stop. We suggest holding the Nitro Rail firmly whilst doing this, so that it doesn't lurch out of your hands.
Break-In on a Flat Surface Break in the engine by running the Nitro Rail on a flat surface (car park/parking lot, etc.) It's important that the engine not be placed under too much load and that it receive adequate airflow during the break-in process, so as not to overheat.
Drive the Nitro Rail as you normally would for a while to get a feel for how the engine reacts to throttle. Now that you know the proper way to tune the engine, you can make slight adjustments to the carburettor until you are satisfied with the performance.
Nitro Rail. It's very important when making changes to the settings of your Nitro Rail that you make the settings the same for each side. For example, if you change the spring tension on the front right shock, you should change the spring tension on the front left shock the same amount, etc.
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'toe-out' is when the front of both tyres point away from each other. For the front tyres, toe-in will make the Nitro Rail track (run) straighter, but the steering will be more sensitive. Toe-out will desensitise the steering, making the Nitro Rail a little more driver-friendly.
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How you drive your Nitro Rail will dictate what settings you should be using. For example, if you're driving your Nitro Rail off-road and going over lots of jumps, you may want to increase the spring tension of the front shocks to help prevent the front of the Nitro Rail from bottoming out.
If you drive your Nitro Rail off-road, in a smooth, high-traction area, use stiffer springs to reduce body roll and weight shift. If the area where you drive your Nitro Rail is very bumpy, you might consider using softer springs to help absorb the bumps. If the area is bumpy and you use harder springs, the Nitro Rail will have a tendency to jump and hop around.
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Tyres The Nitro Rail features 1/8th scale buggy tyres that are sized to provide good overall performance with the 14T clutch bell installed. If you're racing your Nitro Rail, you may want to experiment with different diameter tyres, just the same as you would experiment with different clutch bells.
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Using a heavier weight oil will provide a more even amount of power to the front and rear. On loose tracks, this can cause the Nitro Rail to be too 'squirrely' (uncontrollable) or cause the rear end to slide out. For this reason, we only suggest using heavier oil if you're driving on a high-traction surface.
General Maintenance Following a simple maintenance schedule will ensure that your Nitro Rail Off-Road Buggy operates in top condition every time you use it. It is strongly recommended. Check the chassis for any loose screws, especially the engine and the differential pinion output joint grub screws. Tighten them as necessary.
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Quick Break Down Guide This Quick Break Down Guide is provided to show how to break down the main component parts of the Nitro Rail for maintenance or for repair. For more detailed Assembly Drawings, refer to the Exploded View Assembly Drawings section on pages 33 ~ 69.
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mAINTENANCE AND qUICK bREAK DOWN GUIDE n Quick Break Down Guide, Continued..2: removing the Engine and centre differential Assembly Unsnap the ball link from the throttle arm. Pull the engine and tuned pipe up and out of the chassis. Disconnect the fuel tubing from the carburettor and the tuned pipe.
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mAINTENANCE AND qUICK bREAK DOWN GUIDE n Quick Break Down Guide, Continued..3: removing the centre differential Assembly Remove the two 3 x 12mm screws and two 3mm lock nuts Remove the two 3 x 3mm grub screws from the that hold the centre differential mounting plate to the chassis, top of the brake cams.
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mAINTENANCE AND qUICK bREAK DOWN GUIDE n Quick Break Down Guide, Continued..4: removing the fuel tank Ensure that the fuel tank is empty prior to performing this procedure. Pull the fuel tank up and out of the chassis. Disconnect the two pieces of fuel tubing from the carburettor and the tuned pipe.
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mAINTENANCE AND qUICK bREAK DOWN GUIDE n Quick Break Down Guide, Continued..5: removing the radio tray Pull the radio tray up and out of the chassis. Remove the servo arm from the throttle servo. Remove the servo arm from the steering servo.
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mAINTENANCE AND qUICK bREAK DOWN GUIDE n Quick Break Down Guide, Continued..6: removing the rear suspension Assembly Pull the rear suspension assembly, along with the rear centre dog bone, up and off the chassis. Remove the 3 x 20mm machine screw and 3mm lock nut that hold the front of the rear chassis brace in place.
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mAINTENANCE AND qUICK bREAK DOWN GUIDE n Quick Break Down Guide, Continued..7: removing the front suspension Assembly Remove the two 3 x 20mm that hold the steering tie-rods to the steering knuckles. Remove the 3 x 15mm button head tapping screw that holds the front chassis brace to the chassis cross-brace.
This Troubleshooting Guide has been provided to help you diagnose and solve most problems that you may encounter with your XTM Racing Nitro Rail Off-Road Buggy chassis and XTM Racing .28 two-stroke nitro engine. If you cannot solve the problem using this Troubleshooting Guide, please contact your regional distributor, using the Customer Service Information on page 3.
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TROUbLEShOOTING GUIDE n .28 Two-Stroke Nitro Engine PROBLEM CAUSE SOLUTION Engine does not start A) Failed glow plug A) Replace glow plug with new one B) Glow starter not charged and/or faulty B) Fully charge glow starter and/or replace C) Low speed needle valve too lean C) Adjust low speed needle valve to factory setting (Page 12) D) Old or contaminated fuel D) Replace with new recommended fuel...
ExPLODED vIEW ASSEmbLY DRAWINGS STEP 15: REAR SUSPENSION (148560) Flanged Lock Nut 3mm -- 2 (149901) Hinge Pin 4 x 67.5mm -- 2 (148509) Cap Screw 3 x 20mm -- 2 (148584) Button Head Tapping Screw 4 x 12mm -- 2 148584 STep 12 STep 14R...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 17: FRONT CHASSIS BRACE (148559) Lock Nut 4mm -- 1 (148507) Cap Screw 4 x 50mm -- 1 (148578) Button Head Tapping Screw 3 x 12mm -- 1 148559 right side 148697 STep 9 left side 148578 148507 STEP 18: CHASSIS SIDE GUARDS...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 19: CHASSIS (148558) Lock Nut 3mm -- 8 (148548) Flat Head Screw w/Threadlock 4 x 10mm -- 6 (148539) Flat Head Screw 3 x 10mm -- 8 148558 149478 right side 148558 STep 18 R 148558 149455 149455...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 21: SERVO SAVER AND STEERING LINKAGES (148558) Lock Nut 3mm -- 4 (149559) Flanged Ball Bearing 5 x 8 x 2.5mm -- 2 (149457) Servo Saver Screw 3 x 19.7mm -- 2 149567 (148509) Cap Screw 3 x 20mm -- 2 149455 149567 (149567) Bushing 6 x 10 x 3mm -- 4...
ExPLODED vIEW ASSEmbLY DRAWINGS STEP 25: SHOCK OIL 149850 silicone shock oil (Not Included) 148660 148661 After filling with shock oil, gENtly Pump shaft up and down several times to Eliminate Air Bubbles. STep 24 for front and rear (x4) STEP 26: SHOCK SPRINGS (148672) Shock Spring 58 x 1.6mm (Silver) -- 2 (148673) Shock Spring 80.5 x 1.6mm (Silver) -- 2...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 27: FRONT SHOCK MOUNTING (148560) Flanged Lock Nut 3mm -- 2 (148542) Flat Head Screw 3 x 20mm -- 2 right side 149347 148560 STep 26F STep 17 148542 left side STEP 28: REAR SHOCK MOUNTING (148560) Flanged Lock Nut 3mm -- 2 (148542) Flat Head Screw 3 x 20mm -- 2 left side...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 29: RADIO TRAY MOUNTING (148600) Flat Head Tapping Screw 3 x 10mm -- 9 STep 22 STep 19 148600 148600 148600 148600 148600 Continued On Next Page Page 49...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 30: CENTRE DIFFERENTIAL MOUNTING (148607) Flat Head Tapping Screw 4 x 12mm -- 4 (148527) Button Head Machine Screw 3 x 12mm -- 2 148527 (148558) Lock Nut 3mm -- 2 148527 STep 23 STep 29 148558 148558 148607...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 31: FRONT SUSPENSION MOUNTING (148607) Flat Head Tapping Screw 4 x 12mm -- 2 (148598) Flat Head Tapping Screw 4 x 16mm -- 4 148772 SUB-31 STep 27 148696 SUB-31 STep 30 148607 148598 148598 Continued On Next Page Page 51...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 32: STEERING LINKAGE MOUNTING (148627) Button Head Screw 3 x 20mm -- 2 (148621) Shim 6 x 9.8 x 0.1mm -- 2 (148579) Button Head Tapping Screw 3 x 15mm -- 1 (148659) Button Head Screw 3 x 22mm -- 2 (148554) Washer Head Screw w/Threadlock 4 x 10mm -- 2 (148558) Lock Nut 3mm -- 2 148579...
ExPLODED vIEW ASSEmbLY DRAWINGS STEP 37: ENGINE MOUNTING (148514) Button Head Screw w/Threadlock 5 x 10mm -- 4 STep 36 for Information About Adjusting the gear mesh, see Page 23. STep 33 148514 148514 Continued On Next Page Page 56...
ExPLODED vIEW ASSEmbLY DRAWINGS STEP 42: TUNED PIPE (148560) Flanged Lock Nut 3mm -- 1 (148574) Grub Screw w/Threadlock 5 x 5mm -- 1 (148527) Button Head Screw 3 x 12mm -- 1 148527 STep 41 149717 149326 149717 148560 145825 148574 Continued On Next Page...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 43: RECEIVER, SERVO AND BATTERY CONNECTIONS THROTTLe/BRAKe SeRVO 5 CeLL BATTeRY ReCeIVeR ReD (pOSITIVe) BATT WHITe (SIgNAL) BLACK (NegATIVe) SWITCH CH 1 CH 2 CH 3 BATT STeeRINg SeRVO STEP 44: ANTENNA SUPPORT TUBE ANTeNNA SUppORT TUBe slide the receiver Antenna through the Antenna support tube, then Push the Antenna support tube down through the hole in the chassis...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 45: THROTTLE AND BRAKE LINKAGE ADJUSTMENT high throttle full Brake Idle throttle STEP 46: FUEL PICK-UP AND PRESSURE TUBING FUeL pICK-Up TUBINg FUeL pReSSURe TUBINg STep 45 Continued On Next Page Page 63...
ExPLODED vIEW ASSEmbLY DRAWINGS STEP 47: ROOF PLATE MOUNTS (148546) Flat Head Screw w/Threadlock 3 x 8mm -- 4 148546 148546 148546 148546 right side 148684 148684 148678 left side 148678 STEP 48: REAR CENTRE ROLL BAR (148582) Button Head Tapping Screw 3 x 8mm -- 4 148582 SUB -48 148582...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 49: FRONT CENTRE ROLL BAR (148505) Cap Screw w/Threadlock 3 x 10mm -- 2 (148582) Button Head Tapping Screw 3 x 8mm -- 2 148582 148677 148677 148677 148682 STep 48 148505 148677 SUB-49 148505 SUB-49 STEP 50: ROOF PLATE (148576) Button Head Tapping Screw 3 x 10mm -- 4...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 51: ROLL BAR POSTS (148582) Button Head Tapping Screw 3 x 8mm -- 6 148582 STep 50 right side 148685 148582 left side 148687 148683 148582 Continued On Next Page Page 66...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 52: ROLL BAR MOUNTING (148558) Lock Nut 3mm -- 2 (148582) Button Head Tapping Screw 3 x 8mm -- 6 148582 148582 STep 51 148558 148582 148582 148558 148582 right side STep 46 left side Continued On Next Page Page 67...
ExPLODED vIEW ASSEmbLY DRAWINGS STEP 53: TYRES AND WHEELS INSIDe OUTSIDe C/A TYRe gLUe 148665 (NOT INCLUDeD) Apply c/A tyre glue to Both sides of the tyre/wheel. It's Important 148664 that the tyre is securely Affixed to the wheel. 148665 for right and left sides (x4) STEP 54: WHEEL RINGS (148502) Button Head Screw 3 x 6mm -- 24...
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ExPLODED vIEW ASSEmbLY DRAWINGS STEP 55: WHEEL, BODY SHELL AND WING MOUNTING (149303) Wheel Nut 17mm -- 4 149319 149319 148723 149319 149319 149319 149321 149554 149303 STep 54 right side left side STep 52 149303 STep 54 Page 69...
REPLACEmENT PARTS LIST We stock a complete set of replacement parts for your Nitro Rail Off-Road Buggy. The replacement parts that are available, along with their respective part numbers for easy ordering convenience, are illustrated in this section. When it comes time to order replacement parts, we recommend ordering directly from your local hobby retailer.
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REPLACEmENT PARTS LIST 3mm/6061 Qty. 2 148675 148676 148677 148678 Suspension Plate - Upper Front Roll Bar Stopper Set Roof Plate Mounts Body Mount Set Qty. 2 2mm/6061 L=130mm 148681 148682 148679 148680 Roll Bar Connectors Roof Plate Roll Bar - Front Centre Roll Bar Mount Set Qty.
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REPLACEmENT PARTS LIST Qty. 2 3mm/6061 Qty. 2 Qty. 2 148699 148703 148706 148707 Centre Differential Mounts Servo Saver Support Plate Suspension Arms - Lower Front Suspension Arms - Upper Front Qty. 2 Front or Rear Red/Carbon Qty. 2 L=117mm Qty.
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REPLACEmENT PARTS LIST Includes Tuned Pipe Mount L=48mm 149328 149326 149331 149333 Throttle and Brake Linkage Set Brake Cam Steering Tie-Rod Set - 4mm Steering Servo Rod Set Qty. 2 Qty. 4 L=43.5mm Qty. 3 1.0mm 149343 149347 149381 149408 Clutch Shoes and Springs Steering Knuckles Shock Spring Spacer Bushing Set...
Qty. 10 OPTION PARTS LIST We stock many option parts for your Nitro Rail Off-Road Buggy. The option parts that are available, along with their respective part numbers for easy ordering convenience, are illustrated in this section. More option parts are being added, so don't forget to check websites for details.
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OPTION PARTS LIST n 2-Speed Transmission (Improves Acceleration and Top Speed), Continued..Replacement Part for 149825 12T/17T Option Part for 149825 Use with 149799 Use with 149798 149666 149797 149798 149799 2-Speed Clutch 2-Speed Clutch Bell with Gears 2-Speed Clutch Bell for 12T/17T 2-Speed Pinion Gear - 12T/17T Replacement Part for 149825/Use with 149810 Replacement Part for 149825/Use with 149810...
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OPTION PARTS LIST n 100% Silcone Oils (For Tuning Differentials and Shocks), Continued..146814 146815 149570 Silicone Differential Oil - 100K Wt. Silicone Differential Oil - 200K Wt. Silicone Shock Oil - 200Wt. n Silicone Parts (Protects Against Moisture, Dust and Dirt) Qty.
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OPTION PARTS LIST n Shock Absorbers and Shock Absorber Springs (Affects Ride Quality and Handling), Continued..Qty. 2 1.7mm/Black/L=80.5mm Qty. 2 1.5mm/White/L=80.5mm Qty. 2 1.4mm/Blue/L=80.5mm Qty. 2 1.3mm/Red/L=80.5mm 149364 149366 149370 149372 Shock Springs - Rear Shock Springs - Rear Shock Springs - Rear Shock Springs - Rear Qty.
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OPTION PARTS LIST n Wheels, Tyres, Hex Hubs and Wheel Nuts (Affects Handling and Appearance), Continued..Qty. 2 17mm/Blue Qty. 4 Qty. 4 Qty. 8 149306 149598 149599 149600 Hex Hubs - Front or Rear Locking Wheel Nuts - 17mm/Black Locking Wheel Nuts - 17mm/Blue Nylon Washer for Locking Wheel Nuts Qty.
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OPTION PARTS LIST n Aluminium, Hardened (7075) Aluminium and Titanium (Improves Durability and Appearance) Replaces 148693 Qty. 2 Replaces 149343 3mm/6061/Black/Replaces 148675 Qty. 2 Replaces 149331/L=48mm 148719 149268 149275 149332 Upper Suspension Plate - Front Aluminium Chassis Brace - Rear Steering Knuckles (7075) Titanium Steering Tie-Rods Replaces 148691...
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OPTION PARTS LIST n Engine Accessories and Gearing (Affects Power and Acceleration), Continued..Replaces 149277 Use Ball Bearing 149560 (x2) 149550 149546 149571 149581 Spur Gear - 46T Fuel Filter Air Filter Oil Clutch Bell - 15T (Single Speed) Use Ball Bearing 149560 (x2) Use Ball Bearing 149560 (x2) Use Ball Bearing 149560 (x2) Replaces 149717...
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OPTION PARTS LIST n General Options and Tools, Continued..Qty. 4 L=25.5mm 149522 149556 149558 149909 Bi-Level Wing - Black High-Downforce Wing - White High-Downforce Wing - Yellow Ball Ends - 3.5mm for 7mm Ball Qty. 10 Use with Aluminium Ball Ends Qty.
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OPTION PARTS LIST n Anodised Aluminium Side Guard and Roll Cage Options (Changes Appearance), Continued..150121 150123 Roll Bar - Front Centre (Blue) Roll Bars - Centre Side (Blue) 150122 150124 Roll Bars - Centre Side (Gold) Roll Bar - Front Centre (Gold) 150085 150089 Roll Bars - Centre Side (Red)
RETURNING YOUR PRODUCT fOR WARRANTY REPAIR Before returning your Nitro Rail Off-Road Buggy for warranty consideration, the status of the unit must be within the terms of the Warranty Information as stated below. Do not return your model to the place of purchase. They are not authorised nor equipped to perform warranty work on XTM Racing products.
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