The GT Grunge 20 is a kids bike for the up and coming rider. This model is starting to get some similar features to adult bikes, with an alloy frame designed using the LegitFit system which provides better positioning, easier pedaling, and a faster start to your next ride. While you’ll also get a range of durable alloy components, such as stem, seat post and rims. When your kids are flying around and having a great time on their bike, they’ll need to be able to stop at any moment. For this reason it is equipped with coaster brakes, for the perfect amount of braking power for the little ones, so that they can be kept safe and sound. This bike offers reliability, durability and good looks in one package, perfect for a younger rider.
- Frame - 20" GT LegitFit Design, Alloy
- Fork - GT Hi-Ten Steel, 1" Threaded Steerer
- Chain - KMC S1, 1/2x1/8"
- Crank - Forged One-Piece Type, 127mm, 32T
- Bottom Bracket - Steel, Ball Type
- Pedals - Jr. BMX Design, Resin
- Rims - Alloy, 28h
- Tires - GT 20 x 1.95"
- Front Hub - Steel, Nutted Axle
- Rear Hub - Steel, Nutted Axle, Coaster Brake
- Spokes - Stainless Steel, 14g
- Brakes - Coaster Rear, Rear Alloy VBrake
- Front Brake - Coaster Rear, Rear Alloy VBrake
- Rear Brake - Coaster Rear, Rear Alloy VBrake
- Brake Levers - Alloy V-type
- Handlebar - Steel Riser Bar, 176mm Rise, 580mm Width
- Stem - 2-Bolt Alloy Top, Steel Quill
- Grips - 120mm Closed End
- Headset - 1" Threaded, Steel
- Saddle - GT 1-piece
- Spec Extras - Fender, Bar, Stem Pad
* Specifications are subject to change without notice
|
Basic Ski Tune: $49.95 Includes: Base grind, base & side edge sharpening, buff wax & brushing.
|
Basic Board Tune: $59.95 Includes: Base grind, base & side edge sharpening, buff wax & brushing.
(NO BINDING REMOVAL)
|
Performance Ski Tune: $99.95 Includes: Base grind & stone grind, up to 3" of PTEX repair, base & side edge sharpening, buff wax & brushing. |
|
Ultimate PTEX Repair Tune: $124.95 Includes: Performance Tune + Unlimited PTEX repair. (DOES NOT INCLUDE BASE WELDS) |
Performance Board Tune: $129.95 Includes: Base grind & stone grind, up to 3" of PTEX repair, base & side edge sharpening, buff wax & brushing (WITH binding removal). |
Race Ski Tune: $129.95 Includes: Flat base grind, deep patterned structure, custom base and side edge angles, up to 3" of PTEX repair, buff wax & brushing. |
Extras: Hand wax $30. Base Weld & Epox Repair billed at 1/4 hour $25. Our hourly rate is $100.
See the Montana tuner in action:
Looking or Bike Service as well, head over to our Bike service options.
EZ Pay Layaway
No Fees, up to 6 months to pay, and Lock in at Early Season or Sale prices.
10% down (min $50) and 10% payment every 2 weeks, pick up product once paid in full. We are very flexible with our terms, so please ask if you need special payment exceptions.
Deposit Refundable if cancelled within 7 days. A gift card credit will be issued for layaways cancelled after 7 days. (clearance items require 50% down and limited to a 30day period)
Great for Christmas, Birthdays, Holidays, and Children learning to Save.
Special Financing Offers
6 MONTHS
No interest if paid in full within 6 months*
On purchases with your Synchrony Bank credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum monthly payments required.
Minimum purchase $200
*6 Months
No interest if paid in full within 6 months
Offer applies to single-receipt qualifying purchases of $200 or more. No monthly interest will be charged on promotional balance if you pay the promotional purchase in full within 6 months. If you do not, monthly interest will be charged on the promotional purchase from the purchase date. Depending on the purchase amount, promotion length and payment allocation, the required monthly payments may or may not pay off purchase by the end on promotional period. Regular account terms apply to non-promotional purchases and, after promotion ends, to promotional balance. For new accounts: Purchase APR is 29.99%; Minimum Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval.
1. Can I pick this item up at the Philbrick’s store?
Yes. All products can be ordered online and picked up at our Dover, NH store. Choose Local Pickup during checkout and we’ll notify you when your order is ready.
2. Do you assemble bikes purchased online?
Yes. Bikes purchased through Philbrick’s can be professionally assembled by our in-store technicians so they’re ready to ride when you pick them up.
3. Can I get help choosing the right size or model?
Absolutely. Our staff are experienced riders and can help you choose the correct size, fit, and model. Feel free to call or stop by the store for personalized guidance.
4. Do you offer bike fitting services?
Yes. We offer professional bike fitting services to help ensure comfort, performance, and injury prevention.
5. Can you service equipment purchased from your website?
Yes. Our service department can tune, repair, and maintain bikes and gear purchased from Philbrick’s.
6. How long does local pickup take?
Most orders are ready within 1–2 business days, depending on assembly or service requirements. We’ll email you as soon as your order is ready.
7. Can I return or exchange items at the store?
Yes. Online purchases from Philbrick’s can be returned or exchanged at our Dover, NH location in accordance with our return policy.
8. Do you carry products in the store that aren’t listed online?
No, all products are listed online.
9. Can I speak with someone before placing an order?
Of course. Our team is happy to answer questions about products, sizing, compatibility, or availability before you purchase. Call the store at your convenience. 603-742-9333
10. Where is Philbrick’s located?
Philbrick’s is located in Dover, New Hampshire, serving riders throughout the Seacoast region including Portsmouth, Hampton, and surrounding communities.
The GT Grunge 20 is a kids bike for the up and coming rider. This model is starting to get some similar features to adult bikes, with an alloy frame designed using the LegitFit system which provides better positioning, easier pedaling, and a faster start to your next ride. While you’ll also get a range of durable alloy components, such as stem, seat post and rims. When your kids are flying around and having a great time on their bike, they’ll need to be able to stop at any moment. For this reason it is equipped with coaster brakes, for the perfect amount of braking power for the little ones, so that they can be kept safe and sound. This bike offers reliability, durability and good looks in one package, perfect for a younger rider.
- Frame - 20" GT LegitFit Design, Alloy
- Fork - GT Hi-Ten Steel, 1" Threaded Steerer
- Chain - KMC S1, 1/2x1/8"
- Crank - Forged One-Piece Type, 127mm, 32T
- Bottom Bracket - Steel, Ball Type
- Pedals - Jr. BMX Design, Resin
- Rims - Alloy, 28h
- Tires - GT 20 x 1.95"
- Front Hub - Steel, Nutted Axle
- Rear Hub - Steel, Nutted Axle, Coaster Brake
- Spokes - Stainless Steel, 14g
- Brakes - Coaster Rear, Rear Alloy VBrake
- Front Brake - Coaster Rear, Rear Alloy VBrake
- Rear Brake - Coaster Rear, Rear Alloy VBrake
- Brake Levers - Alloy V-type
- Handlebar - Steel Riser Bar, 176mm Rise, 580mm Width
- Stem - 2-Bolt Alloy Top, Steel Quill
- Grips - 120mm Closed End
- Headset - 1" Threaded, Steel
- Saddle - GT 1-piece
- Spec Extras - Fender, Bar, Stem Pad
* Specifications are subject to change without notice
|
Basic Ski Tune: $49.95 Includes: Base grind, base & side edge sharpening, buff wax & brushing.
|
Basic Board Tune: $59.95 Includes: Base grind, base & side edge sharpening, buff wax & brushing.
(NO BINDING REMOVAL)
|
Performance Ski Tune: $99.95 Includes: Base grind & stone grind, up to 3" of PTEX repair, base & side edge sharpening, buff wax & brushing. |
|
Ultimate PTEX Repair Tune: $124.95 Includes: Performance Tune + Unlimited PTEX repair. (DOES NOT INCLUDE BASE WELDS) |
Performance Board Tune: $129.95 Includes: Base grind & stone grind, up to 3" of PTEX repair, base & side edge sharpening, buff wax & brushing (WITH binding removal). |
Race Ski Tune: $129.95 Includes: Flat base grind, deep patterned structure, custom base and side edge angles, up to 3" of PTEX repair, buff wax & brushing. |
Extras: Hand wax $30. Base Weld & Epox Repair billed at 1/4 hour $25. Our hourly rate is $100.
See the Montana tuner in action:
Looking or Bike Service as well, head over to our Bike service options.
EZ Pay Layaway
No Fees, up to 6 months to pay, and Lock in at Early Season or Sale prices.
10% down (min $50) and 10% payment every 2 weeks, pick up product once paid in full. We are very flexible with our terms, so please ask if you need special payment exceptions.
Deposit Refundable if cancelled within 7 days. A gift card credit will be issued for layaways cancelled after 7 days. (clearance items require 50% down and limited to a 30day period)
Great for Christmas, Birthdays, Holidays, and Children learning to Save.
Special Financing Offers
6 MONTHS
No interest if paid in full within 6 months*
On purchases with your Synchrony Bank credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum monthly payments required.
Minimum purchase $200
*6 Months
No interest if paid in full within 6 months
Offer applies to single-receipt qualifying purchases of $200 or more. No monthly interest will be charged on promotional balance if you pay the promotional purchase in full within 6 months. If you do not, monthly interest will be charged on the promotional purchase from the purchase date. Depending on the purchase amount, promotion length and payment allocation, the required monthly payments may or may not pay off purchase by the end on promotional period. Regular account terms apply to non-promotional purchases and, after promotion ends, to promotional balance. For new accounts: Purchase APR is 29.99%; Minimum Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval.
1. Can I pick this item up at the Philbrick’s store?
Yes. All products can be ordered online and picked up at our Dover, NH store. Choose Local Pickup during checkout and we’ll notify you when your order is ready.
2. Do you assemble bikes purchased online?
Yes. Bikes purchased through Philbrick’s can be professionally assembled by our in-store technicians so they’re ready to ride when you pick them up.
3. Can I get help choosing the right size or model?
Absolutely. Our staff are experienced riders and can help you choose the correct size, fit, and model. Feel free to call or stop by the store for personalized guidance.
4. Do you offer bike fitting services?
Yes. We offer professional bike fitting services to help ensure comfort, performance, and injury prevention.
5. Can you service equipment purchased from your website?
Yes. Our service department can tune, repair, and maintain bikes and gear purchased from Philbrick’s.
6. How long does local pickup take?
Most orders are ready within 1–2 business days, depending on assembly or service requirements. We’ll email you as soon as your order is ready.
7. Can I return or exchange items at the store?
Yes. Online purchases from Philbrick’s can be returned or exchanged at our Dover, NH location in accordance with our return policy.
8. Do you carry products in the store that aren’t listed online?
No, all products are listed online.
9. Can I speak with someone before placing an order?
Of course. Our team is happy to answer questions about products, sizing, compatibility, or availability before you purchase. Call the store at your convenience. 603-742-9333
10. Where is Philbrick’s located?
Philbrick’s is located in Dover, New Hampshire, serving riders throughout the Seacoast region including Portsmouth, Hampton, and surrounding communities.