The Team Associated RC10B7.1 and 7.1D are serious racing buggies, and we’ve built a deep lineup of option parts to match. This guide covers every JConcepts hop-up listed for the B7.1 from the chassis and bulkheads to steering, drivetrain and titanium hardware.
In this guide every JConcepts hard part upgrade gets a quick rundown of what it is and why it’s worth a spot on your car! We hope your battery is fully charged, it’s go time!
And a bonus for anyone running more than one Associated platform: most of these items fit not only the B7.1 but also the T7 and SC7 platforms as well.
Blog article written by: Mike Garrison
The chassis and bulkheads set the foundation of the car, and the plates let you move weight exactly where your track wants it. Aluminum keeps things light, and steel adds mass when you need it.
RC10B7.1 Front Bulkhead 0 Degree (9.3g)
The front bulkhead takes a beating, so we CNC machined this one from 7075 aluminum with extra material for durability. The 0-degree version keeps the stock kick-up angle. It’s laser marked for direction and weight (9.3g), so you always know which way it goes and what it weighs.
Part #: 5182
Options: Blue (5182-1), Black (5182-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5182 on jconcepts.net
RC10B7.1 Front Bulkhead 0 Degree (25g) Steel
When you want more weight up front, this is the part. It’s machined from steel with a black oxide coating and extra material for durability and mass. It keeps the stock 0-degree kick-up and is laser marked with its 25g weight, so you know exactly what you’re adding.
Part #: 5183S
Finish: Steel, black oxide
Fits: RC10B7.1 | RC10B7.1D
Link: View 5183S on jconcepts.net
RC10B7.1 Front Bulkhead 2.5 Degree (25g) Steel
Our 25g steel bulkhead in the 2.5-degree version. It has the same black oxide finish, chamfered edges for a clean fit and laser marking for direction and weight. It lets you add front-end weight and change kick-up in one part.
Part #: 5185S
Finish: Steel, black oxide
Fits: RC10B7.1 | RC10B7.1D
Link: View 5185S on jconcepts.net
RC10B7.1 Steel Servo Weight Plate, Set
This two-piece steel servo weight plate gives you two settings in one part. The main plate is 9.5g, and the included 8g insert interlocks with it for 17.5g total. It’s black oxide coated and laser etched, and it mounts with M2x3mm flat head screws (Team Associated 91749).
Part #: 5192S
Finish: Steel, black oxide
Fits: RC10B7.1 | RC10B7.1D
Link: View 5192S on jconcepts.net
RC10B7.1 Aluminum Electronics Plate (12.3g)
A CNC-machined aluminum electronics plate that weighs 12.3g, so it’s an easy way to fine-tune balance. It’s laser etched for identification and comes in blue or black. It mounts with M2x3mm flat head screws (Team Associated 91749).
Part #: 5193
Options: Blue (5193-1), Black (5193-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5193 on jconcepts.net
RC10B7.1 Steel Electronics Plate, Set
This is the heaviest plate we make for the car. The steel electronics plate has an 18.6g main body, and the included 16.7g insert interlocks with it for a combined 35.3g. Run one piece or both, depending on how much weight you need. It mounts with M2x3mm flat head screws (Team Associated 91749).
Part #: 5194S
Finish: Steel, black oxide
Fits: RC10B7.1 | RC10B7.1D
Link: View 5194S on jconcepts.net
RC10B7.1 Aluminum Battery Hold Set
Our swing-style aluminum battery hold bolts to the stock chassis side guards and works just like the plastic parts it replaces, so pack changes stay quick. We include the hardware, plus tall and short stand-offs and two lengths of button head screws, so you can set it up for a tall pack or a low-profile pack. You reuse the stock O-rings for cushion and vibration resistance.
Part #: 5195
Options: Blue (5195-1), Black (5195-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5195 on jconcepts.net
A protective sheet keeps the bottom of the chassis safe from carpet, turf and dirt, and it looks sharp doing it.
RC10B7.1 Precut Chassis Protective Sheet
Our pre-cut protective sheet is made from durable material that holds up on carpet, turf and dirt. It follows the chassis outline, tucks into the front kick-up and rests under the bumper so the front edge doesn’t lift. Each pack has two full sheets with three separate rear chassis pieces, in neutral JConcepts and Speed Laboratory graphics that match any scheme.
Part #: 5158
Fits: RC10B7.1 | RC10B7.1D
Link: View 5158 on jconcepts.net
RM2, No Apologies RC10B7.1 Precut Chassis Protective Sheet
We developed this one with Ryan Maifield. It’s a heavy-duty, pre-cut sheet with RM2 graphics in stealth black and red, plus the ‘No Apologies’ tag line. Each package includes two pieces, three extra rear chassis pieces and a set of pre-cut decals.
Part #: 8155
Fits: RC10B7.1 | RC10B7.1D
Link: View 8155 on jconcepts.net
Suspension mounts control toe-in, anti-squat and wheelbase, so they’re some of the most effective tuning parts on the car. This section also covers caster hat bushings, the titanium front axle and the wheel nuts that pair with it.
RC10B7.1 Aluminum D Mount
A precision-machined aluminum D mount block that takes the standard Team Associated pill inserts. At 3.3g it’s light enough for weight-conscious racers, but we built it to stand up to modified-level abuse. It’s finished with chamfer highlights in blue or black.
Part #: 5200
Options: Blue (5200-1), Black (5200-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5200 on jconcepts.net
RC10B7.1 Steel D Mount (9.2g)
Same pill-insert design as our aluminum D mount, but in steel at 9.2g. That turns the mount itself into a weight-tuning adjustment for the rear of the car. It has a black oxide finish with chamfered edges.
Part #: 5200S
Finish: Steel, black oxide
Fits: RC10B7.1 | RC10B7.1D
Link: View 5200S on jconcepts.net
RC10B7.1 Aluminum Rear Ball-Stud Mount
The rear ball-stud mount carries a lot of stress, so we CNC machined this one from aluminum. It drops in with kit hardware and keeps the factory tuning locations, including the three camber link holes. Threaded holes handle installation, and pass-through holes line up the transmission cap.
Part #: 5201
Options: Blue (5201-1), Black (5201-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5201 on jconcepts.net
RC10B7.1 Aluminum Rear Hub Link Mount
An all-aluminum rear hub link mount with the stock geometry mounting positions. We added a recess on the outside to save weight, and it works with standard kit hardware. It comes in blue or black with silver chamfering.
Part #: 5202
Options: Blue (5202-1), Black (5202-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5202 on jconcepts.net
RC10B7.1 Aluminum Caster Hat Bushings 0 and 3mm
These CNC-machined aluminum caster hat bushings have indentations so you can tell each thickness apart at a glance. The four-piece pack includes the 0mm and 3mm sizes, the ones most used in carpet racing. They make caster changes quick and easy to track.
Part #: 5196
Options: Blue (5196-1), Black (5196-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5196 on jconcepts.net
RC10B7.1 Aluminum Caster Hat Bushings 1 and 2mm
The companion pack to 5196, with 1mm and 2mm bushings, the sizes most used in dirt racing. You get the same machined aluminum and identifying indentations. If you race dirt, this is the pack to grab.
Part #: 5186
Options: Blue (5186-1), Black (5186-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5186 on jconcepts.net
Adjustable RC10B7.1 | RC10B7.1D Titanium Front Axle
Cutting rotating weight is one of the best upgrades you can make, and this titanium front axle does it with our ‘blooming flower’ design that supports the wheel on individual pads. Titanium also adds strength and durability over aluminum. Each pack includes two axles and two 1.5mm aluminum spacers that go inside or outside to change track width, and we recommend starting with the spacer inside for stock width. It accepts stock hardware and the front wheel nut.
Part #: 2827
Options: Burnt Blue (2827-1), Stealth Black (2827-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 2827 on jconcepts.net
M4 Low-Profile Aluminum Wheel Nut
Our lightweight aluminum M4 wheel nut has a large serrated flange. The flange supports the wheel and helps maintain geometry under load, and the serrated face locks it down. It has a 7mm hex, comes four per set, and is the low-profile nut option for our 2827 titanium front axle.
Part #: 5216
Options: Blue (5216-1), Black (5216-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5216 on jconcepts.net
M4 Large Flange Serrated Wheel Locknut
A precision-machined 4mm wheel locknut with a large flange for extra wheel support and a serrated face for locking security. It’s the direct-replacement wheel nut for our 2827 titanium front axle. Four per pack, in blue or black.
Part #: 2341
Options: Blue (2341-1), Black (2341-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 2341 on jconcepts.net
Shock towers and stand-offs decide where your shocks sit and how they move. Our -2mm towers lower the shock position, and the Fin titanium stand-offs save weight while letting the shocks pivot freely.
RC10B7.1 Fin Titanium Front Stand-off, 8mm
Our Fin titanium stand-offs replace the stock front tower parts and accept stock hardware. A built-in pivot lets the shocks float freely, and the inside is heavily undercut to save weight while still clamping firmly to the tower. The 7mm hex base installs with the most common wrench in your pit box. Two per set, in burnt blue or stealth black.
Part #: 5159
Options: Burnt Blue (5159-1), Stealth Black (5159-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5159 on jconcepts.net
RC10B7.1 Fin Titanium Rear Stand-off, 10mm
The 10mm version of our Fin titanium stand-off is made for the rear tower. It has the same built-in pivot, weight-saving undercut and 7mm hex base. It’s secured with stock hardware and the standard 3mm locknut.
Part #: 5160
Options: Burnt Blue (5160-1), Stealth Black (5160-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5160 on jconcepts.net
Heads up: We also make Fin 13mm shock parts (2701, 2702, 2703, 2721, 2492) and 13mm shock pistons (5327, 5205, 5204). Their pages list them for Team Associated 13mm shocks instead of by vehicle, so they aren’t included here. Check your B7.1’s shock size before you order.
Steering is where we went deepest on the B7.1. There’s a complete steering kit, spare parts for it, and the servo horns and bracket that finish the job.
RC10B7.1 Steering Kit
Our steering kit moves the height adjustment to the steering rack ball-stud, using a steel insert that flips to an upper or lower position, so you don’t have to tear into the bellcranks for every change. It also adds a new pick-up point for the servo link with more mechanical leverage, using the included tall ball-stud; that position needs some top-deck trimming and a 0-offset servo horn. The kit includes CNC aluminum bellcranks and rack, titanium stand-offs, steel ball-stud inserts, 3mm hardware, washers and locknuts. You reuse the kit bearings and steering hat bushing.
Part #: 5209
Options: Blue (5209-1), Black (5209-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5209 on jconcepts.net
RC10B7.1 Aluminum Steering Bell Cranks
Replacement aluminum bellcranks for our 5209 steering kit. They’re CNC machined and servo-saver-less, which gives a more rigid steering system with more feel and response. They come in blue or black with silver chamfered edges.
Part #: 5188
Options: Blue (5188-1), Black (5188-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5188 on jconcepts.net
RC10B7.1 Aluminum Steering Rack
The replacement steering rack for our 5209 kit, CNC machined from lightweight aluminum. It gives the steering a stiffer feel and sharper response. We recommend a light amount of thread locker on any thread that goes into aluminum.
Part #: 5189
Options: Blue (5189-1), Black (5189-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5189 on jconcepts.net
RC10B7.1 Steering Bell Crank Stand-off, Titanium, 2pc
Spare titanium bellcrank stand-offs for our 5209 steering kit. They come two per pack, so you can keep a set in the pit box.
Part #: 5210
Fits: RC10B7.1 | RC10B7.1D
Link: View 5210 on jconcepts.net
RC10B7.1 Threaded Ball-stud Height Adjustment Insert, 2pc
Replacement threaded inserts for our 5209 steering kit. These are the parts that set the rack ball-stud height, and they come two per pack.
Part #: 5211
Fits: RC10B7.1 | RC10B7.1D
Link: View 5211 on jconcepts.net
RC10B7.1 Steering Drag-link Ball-stud, Tall
A spare tall drag-link ball-stud for our 5209 steering kit. It’s the part that gives you the kit’s alternate, higher-leverage steering pick-up point.
Part #: 5212
Fits: RC10B7.1 | RC10B7.1D
Link: View 5212 on jconcepts.net
RC10B7.1 0 Offset Aluminum Clamping Servo Horn, 16.5mm, 23T
This 16.5mm, 23-tooth clamping servo horn has 0 offset and is designed to work with our 5209 steering kit, lining up with the alternate pick-up point on our bellcranks. Side ribs strengthen it against twisting, and a deep pocket hides the 3mm mounting screw. It’s laser etched with the tooth count, so you can tell it apart at a glance.
Part #: 5269-2
Finish: Black anodized
Fits: RC10B7.1 | RC10B7.1D
Link: View 5269-2 on jconcepts.net
RC10B7.1 0 Offset Aluminum Clamping Servo Horn, 16.5mm, 25T
The 25-tooth version of our 16.5mm 0-offset clamping servo horn, for 25T servos. It has the same rib-reinforced design and lines up with the 5209 kit’s alternate pick-up point. It’s black anodized with chamfer highlights.
Part #: 5270-2
Finish: Black anodized
Fits: RC10B7.1 | RC10B7.1D
Link: View 5270-2 on jconcepts.net
RC10B7.1 Servo Horn 25T, 15.5mm Aluminum Clamping
A 15.5mm, 25-tooth aluminum clamping servo horn for setups that need that height. A broad base, a hefty boss around the ball-end and side ribs keep it strong, and a deep pocket hides the 3mm screw. It comes in blue or black and is laser etched with the tooth count.
Part #: 5190
Options: Blue (5190-1), Black (5190-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5190 on jconcepts.net
RC10B7.1 Servo Mount Bracket
Steering trim needs to stay consistent all race long, and that’s what this bracket is for. The aluminum wrap-around brace fits snug in the chassis servo mounting area, and included set screws on each side touch off against the servo case to hold it in place through crashes and hard hits. It installs without modification, and the latest design leaves extra room for the servo lead on servos like Savox.
Part #: 5161
Options: Blue (5161-1), Black (5161-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5161 on jconcepts.net
The motor plate, spur gears and bearings keep power moving smoothly from the motor to the wheels.
RC10B7.1 Aluminum Motor Plate
Big jumps are part of racing now, and sooner or later everyone comes up short. We kept this machined aluminum motor plate beefy for durability, with slightly recessed motor screw locations and countersunk holes for the kit hardware. A chamfer highlight finishes the edge, in blue or black.
Part #: 5197
Options: Blue (5197-1), Black (5197-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5197 on jconcepts.net
RC10B7.1 Silent Speed Spur Gear, 48P
Our Silent Speed spur gears are precision machined, so they’re more concentric than standard molded gears. That gives a consistent gear mesh, more precise adjustment and a quieter drivetrain. Vented sections and slipper pads secured on both sides help keep slipper performance consistent, and each gear is machined with its size so you can identify it off the car.
Part #: 5231
Options: 81T (5231), 78T (5232), 75T (5233), 72T (5234), 70T (5235)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5231 on jconcepts.net
Radial NMB Bearing Set, RC10B7.1, 24pc
A 24-piece set of our Radial bearings made specifically for the B7.1. They’re built with NMB quality, stainless steel and precise tolerances to handle national- and world-level racing. Top racers add a few drops of RM2 bearing oil (8120, sold separately) to each side before use.
Part #: 5355
Fits: RC10B7.1 | RC10B7.1D
Link: View 5355 on jconcepts.net
Turnbuckles set your camber and steering links, and our Fin titanium versions take weight out of every one of them.
RC10B7.1 3.5 x 48mm Fin Titanium Turnbuckle Set
These are the original Fin titanium turnbuckles. A .143 in (3.7mm) titanium hex tapers down to a heavy-duty 3.5mm thread that accepts Team Associated 92308 ball cups, and the left-hand threads are marked for easy orientation. The six-piece set is light, durable and the same style our race team runs, including Spencer Rivkin and Ryan Maifield.
Part #: 5136
Options: Burnt Blue (5136-1), Stealth Black (5136-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5136 on jconcepts.net
RC10B7.1 Fin Titanium Turnbuckle Set, Purple
Our six-piece Fin titanium turnbuckle set in purple, with intentional color variation across the purple spectrum. It has the same 3.5mm thread base, Team Associated 92308 ball cup compatibility and marked left-hand threads. It’s an easy way to add some color to the build.
Part #: 5290P
Finish: Purple
Fits: RC10B7.1 | RC10B7.1D
Link: View 5290P on jconcepts.net
Swapping steel screws for titanium is the easiest way to trim weight across the whole build.
RC10B7.1 Titanium Top Hat Screw Set, Upper
A 91-piece set of our Top Hat titanium screws with matching flat heads for the upper side of the build, plus extra screws for setup changes, front wing setup and maintenance. The screws are separated by size, so it’s easy to match them up with the stock screws. We recommend keeping the kit steel M3x16mm cap screws for mounting the steering bellcranks to the front bulkhead, so the set doesn’t include one for that spot.
Part #: 5356
Options: Burnt Blue (5356-1), Stealth Black (5356-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5356 on jconcepts.net
RC10B7.1 Titanium Screw Set, Lower
A 32-piece set of low-head titanium flat head screws for the lower side of the build, including two screws for the rear of the chassis. The 3mm thread grips well in plastic and aluminum, and the screws are separated by size for easy matching. Use a light amount of thread locker anywhere a screw goes into aluminum.
Part #: 5357
Options: Burnt Blue (5357-1), Stealth Black (5357-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5357 on jconcepts.net
This is wing hardware sold by itself, not a wing.
RC10B7.1 Aluminum 1-Piece Rear Wing Button
Our one-piece aluminum wing button connects two triangular mounts with a brace for a solid footing against the wing. A soft leading edge and domed top help air flow smoothly, and countersunk positions take the standard mounting hardware. It adds strength and durability to the wing mount, with silver chamfer highlights in blue or black.
Part #: 5203
Options: Blue (5203-1), Black (5203-2)
Fits: RC10B7.1 | RC10B7.1D
Link: View 5203 on jconcepts.net
That’s the full B7.1 lineup from front to back, side to side, and top to bottom (as of now – until our next release of course). Yes, we admit these parts look phenomenal, but it isn’t just about looks. Each and every part was designed and tested on the track by our team for race winning performance. It just so happens that in this case performance looks as good as it operates. See you at the track!
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